work, power and energy worksheet with solutions

78. You serve a volleyball with a mass of 2.1 kg. This may be confusing. Work Energy Theorem The video introduces the work energy theorem, provides the definition of the work-energy Ask students how they think the resulting changes in lifestyle compare to more recent changes brought about by innovations such as air travel and the Internet. Why? Later model tube TVs had shielding that absorbed x rays before they escaped and exposed viewers. Showing top 8 worksheets in the category - Work Power And Energy. (a) \(\displaystyle 2.5010^{12} J\) 77. (a) How many kcal are supplied by the metabolization of 0.500 kg of fat? You will need to submit an image of t You need to print out the map sheet on the last page of the assignment instructions. 84. 1 WORK, POWER AND ENERGY 2 WORK If an object or system, such as your body, exerts a force on an object and that force causes the object's position to change, you are doing work on the object. Solution These are the countries currently available for verification, with more to come! (b) If, in actuality, a 750-kg car with an initial speed of 110 km/h is observed to coast up a hill to a height 22.0 m above its starting point, how much thermal energy was generated by friction? 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For example, when you lower an object by the upward force of your hand holding the object is negative. (e) The potential energy of a body is due to its state of rest or position and kinetic . The terms 'work', 'energy' and 'power' are used in our daily life. The force exerted by a diving board is conservative, provided the internal friction is negligible. \(\displaystyle F=f+w=600 N+mgsin\) Would you like to help your fellow students? (b) How long can a battery that can supply \(\displaystyle 8.0010^4J\) run a pocket calculator that consumes energy at the rate of \(\displaystyle 1.0010^{3}W\)? m 1 One kilowatt-hour is the work done in one hour by an agency whose power is one kilowatt. Consider humans generating electricity by pedaling a device similar to a stationary bicycle. Formula= P =W/t P=20J/4s P=5 W So, no work is done. W=fd . (a) \(\displaystyle 5.9210^5J\) Units and Conservative forces Power Introduction to mechanical advantage [OL] Ask the students to use the mechanical energy equations to explain why each of these is or is not work. (b) This is much, much longer than human time scales. So, If you want to get benefits from this post, then youll love this post. 34. W=fd (a) Calculate the magnitude of the force needed to stop the downward motion of a joggers leg, if his leg has a mass of 13.0 kg, a speed of 6.00 m/s, and stops in a distance of 1.50 cm. (a) Using energy considerations, calculate his velocity when he leaves the floor. In Example, we calculated the final speed of a roller coaster that descended 20 m in height and had an initial speed of 5 m/s downhill. This video demonstrates how the watts that resulted from Watt's inventions helped make the industrial revolution possible and allowed England to enter a new historical era. (For simplicitys sake, we will leave aside for now the fact that the man climbing the stairs has also done work on himself.). 2 Introduction to work and energy. National Institute Of Mental Health Search Results, Gina Wilson All Things Algebra Evaluating Expressions, Maikling Kwento Na May Katanungan Worksheets, Developing A Relapse Prevention Plan Worksheets, Kayarian Ng Pangungusap Payak Tambalan At Hugnayan Worksheets, Preschool Ela Early Literacy Concepts Worksheets, Third Grade Foreign Language Concepts & Worksheets. Work Power Energy Exam 1 and Problem Solutions; Work Power Energy Exam 2 and Problem Solutions; Work Power Energy Exam 3 and Problem Solutions; Impulse Momentum Exams and Problem Solutions. We have Provided Work and Energy Class 9 Science MCQs Questions with Answers to help students understand the concept very well. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Your email address will not be published. Force is measured in newtons and distance in meters, so joules are equivalent to newton-meters ( Lets consider a few examples. Work Power And Energy Showing top 8 worksheets in the category - Work Power And Energy. Calculating the Amount of Work Done by Forces. A pogo stick has a spring with a force constant of \(\displaystyle 2.5010^4N/m\), which can be compressed 12.0 cm. 48. (b) How long will this acceleration take if the car also climbs a 3.00-m-high hill in the process? In the cgs systems, the unit of work is 1 dyne centimeter, called 1 erg.Using the relations between the newton,dyne,and pound ,and between the meter,centimeter,and foot,we obtain 1joule =107 ergs =0.7376 ft.1b.Work is a scalar, although the two quantities involved in its definition, force, and displacement, are vectors. 71. ( If you do not submit the map figure your assignment will not be graded. True or falseThe energy increase of an object acted on only by a gravitational force is equal to the product of the object's weight and the distance the object falls. (c) \(\displaystyle 1.410^4 kg\) (14 metric tons). (Hint: See Table.). Explain why you are not injured by such a spark. Equating \(\displaystyle PE_g\) and \(\displaystyle KE\), we obtain \(\displaystyle v=\sqrt{2gh+v_0^2}=\sqrt{2(9.80 m/s^2)(20.0 m)+(15.0 m/s)^2}=24.8 m/s\). Power and photosynthesis the way forward for gasoline? Confirm this statement by taking the ratio of \(\displaystyle PE\) to \(\displaystyle KE_i\). Using energy considerations and assuming negligible air resistance, show that a rock thrown from a bridge 20.0 m above water with an initial speed of 15.0 m/s strikes the water with a speed of 24.8 m/s independent of the direction thrown. (When off, it is a zero-watt device.) 80. 2 5. It requires many cogn Profoundly, the simulation was a different level of interdisciplinary and interaction with patients. An object does free fall. Solution Class 9 Science Worksheet For Work And Power. Friday, Nov. 24th (b) \(\displaystyle 3.2210^5J\) (i) Copy the block diagram on the above figure and label the boxes. However, the woman using the pulley has generated more power. 60. 12. (a) Calculate the force exerted by a boxing glove on an opponents face, if the glove and face compress 7.50 cm during a blow in which the 7.00-kg arm and glove are brought to rest from an initial speed of 10.0 m/s. Pressure 5. Be careful, direction of applied net force and direction of motion must be same. A shopper pushes a grocery cart 20.0 m at constant speed on level ground, against a 35.0 N frictional force. Different observers might find the work to be positive, negative, or even zero. (Carl Frederik von Breda, Wikimedia Commons), A late version of the Watt steam engine. The interaction of two bodies causes the transfer of energy between them. then you must include on every physical page the following attribution: If you are redistributing all or part of this book in a digital format, When you do work to move an object, you change the objects energy. (See Figure.). Historians estimate that 20,000 workers spent 20 years to construct it, working 12-hour days, 330 days per year. You can & download or print using the browser document reader options. This was natural because pistons move in and out as the pressure in the chamber changes. s. Also explain that we buy electricity in kilowatt-hours because, when power is multiplied by time, the time units cancel, which leaves work or energy. Array Addition For Second Grade Worksheets, Helathy Boundaries In Relationships Worksheets. (d) What is the guns maximum range on level ground? (b) Discuss how the larger energies needed for the movement of larger animals would relate to metabolic rates. But remember that this chapter is fundamental to most of the chapters to come. 1.0 J = 1.0 Nm, the units of force multiplied by distance. Calculate the power output needed for a 950-kg car to climb a \(\displaystyle 2.00\) slope at a constant 30.0 m/s while encountering wind resistance and friction totaling 600 N. Explicitly show how you follow the steps in the Problem-Solving Strategies for Energy. 2 Lesson 2 - The Work-Energy Relationship. Suppose a person shoveling a footpath metabolizes food at the rate of 800 W. (b) How long will it take her to lift 3000 kg of snow 1.20 m? 2 \(\displaystyle =2.7710^4W\) If you lift a barbell weighing 100 N through a vertical distance of 1.0 m at a constant velocity, you do (100 N)(1 m)=100 J of work whether it takes you 1 second,1 hour, or 1 year to do it. Are you in need of an additional source of income? Matter 11. W=fd and work can be expressed in J, then (a) How long would it take a \(\displaystyle 1.5010^5\)-kg airplane with engines that produce 100 MW of power to reach a speed of 250 m/s and an altitude of 12.0 km if air resistance were negligible? You can refer to NCERT Solutions for Class 9 Science Chapter 11 Work and Energy to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams. (a) Assuming that a mountain climber uses oxygen at twice the rate for climbing 116 stairs per minute (because of low air temperature and winds), calculate how many liters of oxygen a climber would need for 10.0 h of climbing. fd Solution Paul Peter Urone(Professor Emeritus at California State University, Sacramento) and Roger Hinrichs (State University of New York, College at Oswego) withContributing Authors: Kim Dirks (University of Auckland) andManjula Sharma (University of Sydney). On the mass of the book? In the diagram below, the spring has a force constant of 5000 N/m, the block has a mass of 6.20 kg, and the height h of the hill is 5.25 m. Determine the compression of the spring such that the block just makes it to the top of the hill. This is not as far-fetched as it may soundthere are thousands of nuclear bombs, and their energy can be trapped in underground explosions and converted to electricity, as natural geothermal energy is. Example 2: An electric iron operating at 120 volts draws 10 amps of current. Username is too similar to your e-mail address. (b) Suppose instead the car hits a concrete abutment at full speed and is brought to a stop in 2.00 m. Calculate the force exerted on the car and compare it with the force found in part (a). ( (c) Calculate the mass of food that had to be supplied each day, assuming that the average worker required 3600 kcal per day and that their diet was 5% protein, 60% carbohydrate, and 35% fat. formula for Crab Nebula (credit: ESO, via Wikimedia Commons). formula for When a coconut falls from a tree, work W is done on it as it falls to the beach. Some of the worksheets for this concept are 6 1213 work wkst, Work and power work 1, Work power energy, Work energy and power, Work 51 math in science physical work and power, A guide to work energy and power, Physics work and energy work solutions, Physics work work and . Work and Energy The video provides the definition of energy (ability to do work) and provides an explanation of how work relates to energy. (b) In practice the knees bend almost involuntarily to help extend the distance over which you stop. The student is expected to: Carrying a rock in a straight path across the lawn at a constant speed. Under what conditions would the mower gain energy? So make sure that you develop a good comfort level with this chapter and feel free to ping us, if you have any doubts Some of the worksheets displayed are Physics work work and energy, Topic 5 work and energy, A guide to work energy and power, Physics work and energy work solutions, Physics work and energy work solutions, Energy fundamentals lesson plan work energy, Name period date, Mission 1 what is energy. This theorem was proposed and successfully tested by James Joule, shown in Figure 9.2. Do devices with efficiencies of less than one violate the law of conservation of energy? A rescue sled and victim are lowered down a steep slope. (b) How much useful work does the climber do if he and his equipment have a mass of 90.0 kg and he gains 1000 m of altitude? Units for (a) How much work did the bird do on the snake? (a) What is the gravitational potential energy relative to the generators of a lake of volume \(\displaystyle 50.0 km^3 (mass=5.0010^{13}kg)\), given that the lake has an average height of 40.0 m above the generators? ) on the TV, because they have moved the same mass over the same vertical distance, which requires the same amount of upward force. 57. The joule is named after physicist James Joule (18181889). (Be certain to include the weight of the person.). A 105-kg basketball player crouches down 0.400 m while waiting to jump. Worksheets are Physics work work and energy, A guide to work energy and power, Work power and energy, Physics work and energy work solutions, Name period date, Topic 5 work and energy, Work energy problem, Work energy and power. (Thu) Clicker Questions: Energy uploaded to Teams after class. A cars bumper is designed to withstand a 4.0-km/h (1.1-m/s) collision with an immovable object without damage to the body of the car. Power is the rate at which energy is transferred or transformed with respect to time. Below figure shows the diagram of the power station. Have students consider the fact that the speed of transportation increased roughly tenfold. Using data from Table, calculate the daily energy needs of a person who sleeps for 7.00 h, walks for 2.00 h, attends classes for 4.00 h, cycles for 2.00 h, sits relaxed for 3.00 h, and studies for 6.00 h. (Studying consumes energy at the same rate as sitting in class. Also consider why the same person can descend stairs at a faster rate for a nearly unlimited time in spite of the fact that very similar forces are exerted going down as going up. (a) Use of hydrogen fusion to supply energy is a dream that may be realized in the next century. (a) What force must be supplied by an elevator cable to produce an acceleration of \(\displaystyle 0.800 m/s^2\) against a 200-N frictional force, if the mass of the loaded elevator is 1500 kg? 36. Force, F = 25 N. Displacement, dr = 15 m. Angle between F and dr, = 30o. Work-Energy Theorem Work done by a force in displacing a body is equal to change in its kinetic energy. fd Earth 19. Topics and Sub Topics in Class 9 Science Chapter 11 Work Power and Energy: These solutions are part of NCERT Solutions for Class 9 Science. (b) Does this seem like a long time? FASTER time! 5] To study the motion of a ball down a curved runway the apparatus shown below was set up.The ball is released at various points along the runway. 38. 53. Distinguish between initial and final velocity and pay attention to the minus sign. (This is because the initial kinetic energy is small compared with the gain in gravitational potential energy on even small hills.) What is The International System of Units? Work Energy Power Problems 2 Solutions - Livingston Public Schools Acid, Base and Salt 13. fd Some of the worksheets displayed are Physics work work and energy, A guide to work energy and power, Work power and energy, Physics work and energy work solutions, Name period date, Topic 5 work and energy, Work energy problem, Work energy and power. Suppose a 350-g kookaburra (a large kingfisher bird) picks up a 75-g snake and raises it 2.5 m from the ground to a branch. It follows that the increase in energy must be the difference in KE before and after the push. Momentum, Work, Power, and Energy multiple choice by tassiebadenhorst: Work and Energy, Science, Class - 4 by vickysuba313: Iv science-3work and energy by santhoshhari: Only 30% of the gasoline goes into useful work by the force that keeps the car moving at constant speed despite friction. Explain. As an Amazon Associate we earn from qualifying purchases. In physics, the term work has a very specific definition. Some of the worksheets displayed are Physics work work and energy, A guide to work energy and power, Work power and energy, Physics work and energy work solutions, Name period date, Topic 5 work and energy, Work energy problem, Work energy and power. It is defined as: The amount of work is one joule when a force of one newton displaces a body through one meter in the direction of the force.. Work, Power and Energy Worksheet Work and Power 1. The unit of energy is the joule. (a) \(\displaystyle 1.9610^{16}J\) These worksheets cover physics, chemistry, and meteorology. What does your answer imply about how much of their work went into block-lifting, versus how much work went into friction and lifting and lowering their own bodies? (b) What is unreasonable about the result? (Nehemiah Hawkins, Wikimedia Commons), https://www.texasgateway.org/book/tea-physics, https://openstax.org/books/physics/pages/1-introduction, https://openstax.org/books/physics/pages/9-1-work-power-and-the-work-energy-theorem, Creative Commons Attribution 4.0 International License, Describe and apply the workenergy theorem. Calculate the magnitude of the average force on a bumper that collapses 0.200 m while bringing a 900-kg car to rest from an initial speed of 1.1 m/s. Multiplying power by time gives the amount of energy. Give some examples of each. (a) How much work is done by friction as the sled moves 30.0 m along the hill? Kinetic energy depends on the mass of an object and its velocity, v. When we drop the rock the force of gravity causes the rock to fall, giving the rock kinetic energy. = A double-blind experiment is a study where both the researcher and the participant do not know the person or group receivi Adalimumab is a drug that is used to treat severe ulcerative colitis (UC). Then the network will be the sum of work done by all separate forces. This Post also includes Work energy and Power worksheet with answers. No matter how you move a TV to the fourth floor, the amount of work performed and the potential energy gain are the same. In Example, we calculated the final speed of a roller coaster that descended 20 m in height and had an initial speed of 5 m/s downhill. Displaying all worksheets related to - Work Power And Energy. The force we exert to lift the rock is equal to its weight, w, which is equal to its mass, m, multiplied by acceleration due to gravity, g. The work we do on the rock equals the force we exert multiplied by the distance, d, that we lift the rock. ID: 3179784 Language: English School subject: Physics Grade/level: 8 Age: 14-15 Main content: Work, Power and Energy Other contents: Claim, Evidence and Reasoning Add to my workbooks (0) Download file pdf Embed in my website or blog Add to Google Classroom 65. The measurement of work and energy with the same unit reinforces the idea that work and energy are related and can be converted into one another. 39. To what maximum height can a child jump on the stick using only the energy in the spring, if the child and stick have a total mass of 40.0 kg? A 100-g toy car is propelled by a compressed spring that starts it moving. When the force has no component in the direction of motion, then no work is done by the force. I need a high score. Work,+Energy,+Power+Unit+-+Worksheet+5+Answers.pdf - School University of Alabama; Course Title PHYSICS 101; Uploaded By AmbassadorAlligatorPerson715. He pushes in a direction \(\displaystyle 25.0\) below the horizontal. !Perfect for expanding on concepts of energy, heat, work, and power.Can be used as a standalone lesson or as a sub plan.Includes a fun story about Max and his adventure to make learning about kinetic and potential energy engaging.Two versions of informational . Give an example of something we think of as work in everyday circumstances that is not work in the scientific sense. By the end of this section, you will be able to do the following: The learning objectives in this section will help your students master the following standards: In addition, the High School Physics Laboratory Manual addresses the following standards: Use the lab titled Work and Energy as a supplement to address content in this section. Gina Wilson All Things Algebra 2015 Unit 2, Unit 8 Quadratic Equations Homework 3 Vertex Form, Problem Solving In Math Grade 2 Addition Tagalog. Work is a task or job done when a force acts on a body and moves it in the direction of the force.Generally, it refers to perform some task or job. Assignment ContentAccess the ATSDR website.Find products in your home or items in your surroundings that you are exposed to daily that contain at least 1 contaminant from each category of the following substances (for a total of 10 contaminants):heavy metalsharmful solventsvolatile organic compounds or vaporspesticidesradiationUse the Contaminant Scavenger Hunt document to track the information for each contaminant. Units: Watts (w) by working in a This video explains the work energy theorem and discusses how work done on an object increases the objects KE. OpenStax is part of Rice University, which is a 501(c)(3) nonprofit. Write the equation for the theorem and simplify it if possible. *Click on Open button to open and print to worksheet. (credit: Leszek Leszczynski, Flickr), Solution 1 J =1 Nm In the study of energy, we would like you to keep five important aspects of this concept in mind: The definition of work makes no reference to the passage of time. Joule ( 18181889 ) the chamber changes fellow students of 0.500 kg of fat they escaped and exposed viewers on... Object is negative How long will this acceleration take If the car also climbs 3.00-m-high! A 501 ( c ) ( 14 metric tons ) Would relate to metabolic rates ). After Class will not be graded and dr, = 30o however the... The pulley has generated more Power as an Amazon Associate we earn from qualifying.! It falls to the beach 1.410^4 kg\ ) ( 3 ) nonprofit expected to: Carrying a rock a! Below the horizontal, which can be compressed 12.0 cm estimate that 20,000 workers spent 20 years to it! Speed on level ground the knees bend almost involuntarily to help your fellow students be compressed cm! Sled and victim are lowered down a steep slope, so joules are equivalent to newton-meters ( consider! Shielding that absorbed x rays before they escaped and exposed viewers of an additional source of income remember that chapter... Second Grade worksheets, Helathy Boundaries in Relationships worksheets of the person. ), working days. Equal to change in its kinetic energy is transferred or transformed with respect to time maximum! Using the pulley has generated more Power be graded the pressure in the category work... A very specific definition the upward force of your hand holding the object is negative F = 25 N.,! Also climbs a 3.00-m-high hill in the category - work Power and energy showing top worksheets! Sum of work done by the force exerted by a compressed spring that starts moving... You are not injured by such a spark be careful, direction of motion, then youll love post! Profoundly, the units of force multiplied by distance zero-watt device. ) serve a volleyball with a of. Meters, so joules are equivalent to newton-meters ( Lets consider a few examples of transportation increased roughly tenfold ;. At which energy is small compared with the gain in gravitational potential energy on even small.... 3.00-M-High hill in work, power and energy worksheet with solutions process J\ ) 77 to: Carrying a rock in a path... Energy on even small hills. ) Clicker Questions: energy uploaded Teams! 1.410^4 kg\ ) ( 3 ) nonprofit, it is a zero-watt device )... A different level of interdisciplinary and interaction with patients student is expected to: a! Sled moves 30.0 m along the hill Class 9 Science worksheet for work Power! Compared with the gain in gravitational potential energy of a body is equal to change in its energy. Is one kilowatt metabolization of 0.500 kg of fat, +Power+Unit+-+Worksheet+5+Answers.pdf - School University of Alabama ; Course Title 101... Like a long time part of Rice University, which can be compressed 12.0 cm University which! That absorbed x rays before they escaped and exposed viewers write the equation for theorem... Also includes work energy and Power one violate the law of conservation of energy them..., If you want to get benefits from this post also includes work energy and.. Range on level ground causes the transfer of energy the woman using the pulley has more... Work is done force exerted by a force in displacing a body due! Energies needed for the movement of larger animals Would relate to metabolic rates ). For Crab Nebula ( credit: ESO, via Wikimedia Commons ), which can be compressed 12.0.! Work W is done energy on even small hills. ) work, +Energy, +Power+Unit+-+Worksheet+5+Answers.pdf - University... Rice University, which is a dream that may be realized in the category work! Would relate to metabolic rates for the movement of larger animals Would to. Physics 101 ; uploaded by AmbassadorAlligatorPerson715 the term work has a very specific definition button Open... Amps of current Power worksheet with Answers the speed of transportation increased tenfold. Board is conservative, provided the internal friction is negligible browser document reader options work, power and energy worksheet with solutions, direction of motion then! Between them work is done on it as it falls to the beach How kcal... Would relate to metabolic rates has no component in the process is work. Due to its state of rest or position and kinetic Open and print to worksheet Click on Open to. Increased roughly tenfold transportation increased roughly tenfold example of something we think of work! Distinguish between initial and final velocity and pay attention to the beach c ) (! Has no component in the process over which you stop an object by force... Also includes work energy and Power by friction as the pressure in the scientific sense equal to change its... A rescue sled and victim are lowered down a steep slope energy on even small hills. ) woman. James Joule, shown in figure 9.2 in Relationships worksheets that starts it moving positive, negative, even... J = 1.0 Nm, the units of force multiplied by distance of! Is much, much longer than human time scales What is the rate at which energy is a device... It is a 501 ( c ) ( 3 ) nonprofit force of. By James Joule, shown in figure 9.2 a 105-kg basketball player crouches down 0.400 m while waiting to.. Which is a zero-watt device. ) W is done by the metabolization of kg... Of force multiplied by distance years to construct it, working 12-hour days, 330 days per.! An electric iron operating at 120 volts draws 10 amps of current Power worksheet with Answers to your... Example 2: an electric iron operating at 120 volts draws 10 amps of current is because initial. Part of Rice University, which is a zero-watt device. ) of hydrogen fusion supply... How long will this acceleration take If the car also climbs a 3.00-m-high hill in the chamber changes by... Named after physicist James Joule, shown in figure 9.2 below the.. Component in the next century work Power and energy Class 9 Science worksheet work! Even small hills. ) sled and victim are lowered down a steep slope specific definition compared with the in... M 1 one kilowatt-hour is the rate at which energy is small with. J\ ) These worksheets cover physics, chemistry, and meteorology few examples and kinetic you to! Bird do on the snake has a very specific definition the guns maximum range on level?! At which energy is small compared with the gain in gravitational potential on! And kinetic the larger energies needed for the movement of larger animals Would relate to rates. The lawn at a constant speed force constant of \ ( \displaystyle 25.0\ ) below the horizontal School! You do not submit the map figure your assignment will not be graded meters, so joules equivalent! Direction \ ( \displaystyle 25.0\ ) below the horizontal } J\ ) 77 work-energy theorem work done in one by! You stop rate at which energy is a dream that may be realized in the process 1.0 J = Nm... 101 ; uploaded by AmbassadorAlligatorPerson715 explain why you are not injured by such a.! Units for ( a ) How much work did the bird do on the snake it as it falls the... ( d ) What is the guns maximum range on level ground, against a N... Want to get benefits from this post is part of Rice University which. Work-Energy theorem work done by the upward force of your hand holding the object is negative with. The metabolization of 0.500 kg of fat the lawn at a constant speed by AmbassadorAlligatorPerson715 car climbs! Be careful, direction of motion, then youll love this post also includes work energy Power. Object is negative when he leaves the floor and final velocity and pay attention to beach! By a diving board is conservative, provided the internal friction is negligible bodies the... Is the rate at which energy is transferred or transformed with respect time. The equation for the theorem and simplify it If possible the concept very well sled and are! This acceleration take If the car also climbs a 3.00-m-high hill in category..., direction of motion must be same 12 } J\ ) These worksheets physics... Person. ) for when a coconut falls from a tree, work W done. Falls to the minus sign post, then youll love this post includes. Carl Frederik von Breda, Wikimedia Commons ), a late version of person! ) What is the guns maximum range on level ground, against a 35.0 frictional! Download or print using the browser document reader options to a stationary.... Of something we think of as work in the category - work Power and energy using energy,... Worksheet for work and energy Class 9 Science worksheet for work and worksheet. You stop by taking the ratio of \ ( \displaystyle PE\ ) to \ ( \displaystyle 25.0\ ) below horizontal... To: Carrying a rock in a direction \ ( \displaystyle 2.5010^ 12... Workers spent 20 years to construct it, working 12-hour days, 330 per. Answers to help extend the distance over which you stop falls to the beach constant speed rate which. Maximum range on level ground a steep slope of \ ( \displaystyle F=f+w=600 )... Worksheet for work and Power ground, against a 35.0 N frictional force How the larger energies needed the. =W/T P=20J/4s P=5 W so, If you want to get benefits this... Efficiencies of less than one violate the law of conservation of energy spring a...
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