# Physics Work and Energy Worksheet Solutions

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A spring-loaded toy dart gun is used to shoot a dart straight up in the air, and the dart reaches a maximum height of 24 m. The same dart is shot straight up a second time from the same gun, but this time the spring is compressed only half as far as before ﬁring. How far up does the dart go this time, neglecting friction and assuming an ideal ...

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Physics Work and Energy Worksheet Solutions
A spring-loaded toy dart gun is used to shoot a dart straight up in the air, and the dart reaches a maximum height of 24 m. The same dart is shot straight up a second time from the same gun, but this time the spring is compressed only half as far as before ﬁring. How far up does the dart go this time, neglecting friction and assuming an ideal ...
Physics 1100: Work & Energy Solutions - kpu.ca
How much work is done ... Assume no friction. The mass of the block is 10.0 kg. Since the problem involves a change in height and speed, we make use of the generalized Work­Energy Theorem, WNC = E = P ... surface where it passes over a 2.00­m rough patch.
Physics 113 - Class Worksheet Ch 5 - Work and Energy
2. A toy cork gun contains a spring whose spring constant is 10.0 N/m. The spring is compressed 5.00 cm and then used to propel a 6.00-g cork. The cork, however, sticks to the spring for 1.00 cm beyond its unstretched length before separation occurs. The muzzle velocity of this cork is: A) 1.02 m/s B) 1.41 m/s C) 2.00 m/s D) 2.04 m/s E) 4.00 m/s 3.
Physics Worksheet Work and Energy - greeleyschools.org
Physics Worksheet Work and Energy Section: Name: Mr. Lin 1 Show all work for the following questions, including the equation and substitution with units. 1. An 80 N force has been applied to a block and move it 20 m along the direction of the force. How much work has been done to the block? 2.
Physics Work and Energy Bar Graph Worksheet
The end goal of each problem is to complete the energy bar graphs. 1. Diver Problem A stuntman (85 kg) stands atop of a high platform. At the top of the platform his potential energy is 15,000J. If he jumps from the platform (v o = 0), complete the bar graphs for each of the following locations:
Physics Worksheet Lesson 15 Work and Energy - erhsnyc.org
6. Calculate the power expended when a 500 N barbell is lifted 2.2 m in 2 s. 7. An escalator is used to move 20 passengers every minute from the first floor of a department store to the second. The second floor is located 5-meters above the first floor. The average passenger's mass is 60 kg. Determine the power requirement of the escalator in ...
Physics Worksheet Momentum Impulse Work and Energy Answers
Physics Worksheet Momentum and Impulse Section: Name: Mr. Lin 1 1. Momentum = mass x velocity. p = m x v. 2. A 1000 kg car is moving at 20 m/s. ... (Conservation of Energy) Total Energy at point A = Total Energy at point B TE A = TE B PE A + KE A = PE B + KE B mgh A ... Physics Worksheet Momentum Impulse Work and Energy_Answers
Physics Conservation of Energy Worksheet Solutions
Physics Conservation of Energy Worksheet Solutions Part I 1. A trolley makes two separate runs down an inclined plane. It is released ﬁrst from Y, halfway up the slope and then from X at the top of the slope. Which of the following statements is/are true? (i) The trolley takes twice as long to run from X to Z as it take to run from Y to Z.
Physics 03-01 Work and the Work-Energy Theorem Name: Work
Physics 03-01 Work and the Work-Energy Theorem Name: _____ Created by Richard Wright – Andrews Academy To be used with OpenStax College Physics Homework 1. A box is being moved with a velocity v by a force P (parallel to v) along a level horizontal floor.The normal force is
Chapter 7 – Kinetic energy, potential energy, work - Physics
Chapter 7 – Kinetic energy, potential energy, work I. Kinetic energy. II. Work. III. Work - Kinetic energy theorem. IV. Work done by a constant force: Gravitational force V. Work done by a variable force. - Spring force. - General: 1D, 3D, Work-Kinetic Energy Theorem ... 20cos30 sin30 ( ) ...
AP Physics Practice Test: Work, Energy, Conservation of Energy
AP Physics Practice Test: Work, Energy, Conservation of Energy ©2011, Richard White www.crashwhite.com Part II. Free Response 6. A block of mass m rests on a rough surface, and has a light spring of spring constant k and unstretched length d attached to one side as shown, with the other end of the spring attached to an anchor. There is a
AP Physics – Work/Energy – 6 ans
AP Physics – Work/Energy – 6 ans 1. A 0.50 kg cart moves on a straight horizontal track. The graph of velocity Vx versus time t for the cart is given below. (a) Indicate every time t for which the cart is at rest.
9 Energy 9.1 Work - Croom Physics
9 Energy Work is done when a net force acts on an object and the object moves in the direction 9.1 Work of the net force. 9 Energy Work is the product of the force on an object and the distance through which the object is moved: the quantity force × distance We do work when we lift a load against Earth’s gravity.
Work and Energy - Iona Physics
Work and Energy 1. If the velocity of a moving object is doubled, the object's kinetic energy is (1)unchanged (3)doubled (2)halved (4)quadrupled 2. Which cart shown below has the greatest kinetic energy? (1) (3) (2) (4) 3. As a block is accelerated from rest along a horizontal surface, its gravitational potential energy (1)decreases (3)remains ...
Ch 8 – Energy & Work - Learn Conceptual Physics
Ch 8 – Energy & Work! Work, Energy, Power! “Work,” “energy,” and “power” ... These words have very speciﬁc meanings in physics; you’ll need to be careful not to mix up the two ways of speaking.! Deﬁnition of Work!!!! Note that the Force and the displacement have to be in ... I lift a 8-kg bowling ball up 50 cm into the air ...
physics: work and energy - Freelance Teacher
physics: work and energy How to use “Ei + net Wnc = Ef ” and “Ei=Ef” (conservation of mechanical energy) to solve problems 1. Identify and label the initial and final points of the interval you are considering. 2. Identify all the forces on the object.
Physics Practice Problems: Work and Energy
Physics Practice Problems: Work and Energy Page 1 of 5 Please ignore air resistance, treat all surfaces as frictionless unless otherwise specified or implied. Work and work-energy theorem: 1. A 2kg crate rests on the floor.
Work and Energy - Boston University Physics
Work and Energy 2 W = F·d ... Change in KE is the area under the net force vs. position graph. This should be contrasted with the use of the net force vs. time graph, where change in momentum is the area under the net force vs. time graph. Work-KE Theorem. 10. Two disks . Two disks are initially at rest. The mass of disk B is two times
Problem Set 5 Work and Kinetic Energy Solutions
Problem Set 5 Work and Kinetic Energy Solutions Problem 1: Work Done by Forces a) Two people push in opposite directions on a block that sits atop a frictionless surface (The soles of their shoes are glued to the frictionless surface). If the block, originally at
AP Physics Final Examples: Work, Energy SCROLL DOWN FOR ...
AP Physics Final Examples: Work, Energy SCROLL DOWN FOR SOLUTIONS 49. (II) A ski starts from rest and slides down a 22º incline 75 m long. (a) If the coefficient of friction is 0.090, what is the ski’s speed at the base of the incline?b
Work and Kinetic Energy Lectures for University Physics ...
Relation between Kinetic energy and the TOTAL work done on an object: the work-energy theorem The next idea couples kinematics (changes in velocity of an object) and Netwon’s second law of motion (total force on an object leading to an acceleration) to the total work done on an object. The work done by the net (total) force on an object is
Lesson 2 Work, Energy and Power The Physics Classroom: MOP ...
Work-Energy Bar Charts Read from Lesson 2 of the Work, Energy and Power chapter at The Physics Classroom: ... of physical situations is a work-energy bar chart. A work-energy bar chart represents the amount of energy present in a system by means of a vertical bar. The length of a bar is representative of the amount
Work Energy Review - Patel Physics - Home
Work Energy Review . As shown in the diagram below, a child applies a ... As a ball falls freely (without friction) toward the ground, its total mechanical energy A. decreases B. increases C. remains the same . A pendulum is pulled to the side and released from rest.
AP Physics 1 - Energy, Work, and Power Practice Test ...
AP Physics 1 - Energy, Work, and Power Practice Test (Multiple Choice Section) Directions: Mark only one answer for each question. Use g = 10 m/s2 for simplicity. 1. Weightlifter A lifts a 50 kg mass 1 m above the ground. Weightlifter B lifts an identical 50 kg mass 2 m above the ground.
PHYSICS HOMEWORK #41 ENERGY CONSERVATION WORK ... - smcisd.net
14. Suppose that you have a mass of 62.0 kg and that you walk to the top of a stairway which is h = 12.0 meters high and L= 15.0 meters deep. a. How much work will you have to do in walking to the top of the stairway? Ans. To get to the top of the stairs, W = F d=mgh = 62.0 kg . . 12 m =7291.2 J b.
Name: Date: Physics I H Mr. Tiesler Work, Power & Energy ...
22.) A spring with k=53 N/m hangs vertically next to a ruler. The end of the spring is next to the 15 cm mark on the ruler. If a 2.5 kg mass is now attached to the end of the spring, where will the end of the spring line up with the ruler marks? 23.) A novice skier, starting from rest, slides down a frictionless 35.0º incline whose vertical
Work, Power and Energy Worksheet
Calculate the work done by a 47 N force pushing a 0.025 kg pencil 0.25 m against a force of 23 N. 3. Calculate the work done by a 2.4 N force pushing a 400 g sandwich across a table 0.75 m wide.
Physics 11 – Momentum, Work, Power, Energy Test Review
Physics 11 – Momentum, Work, Power, Energy Test Review IMPULSE AND MOMENTUM: 1. What is the momentum of a 0.25 kg hockey puck traveling at 9 m/s? 2. A 300 N force is applied to a stalled car for 4 seconds. If the car has a mass of 1500 kg, what is the change in velocity of the car? 3.
The Physics Classroom 2009 Answer Key Work Energy And Power
Physics Classroom 2009 Answer Key - Answers Fanatic the physics classroom 2009 series circuits answers - Nov 16, 2009Â Â· This blog is intended to provide teachers with quality links for teaching science that will help to engage pupils in the classroom.The Physics Classroom 2009 Answer Key -
PHYSICS STUDY GUIDE CHAPTER 10: WORK-ENERGY TOPICS ...
KINETIC ENERGY • KINETIC ENERGY: Ability to do work as a result of the velocity of the system. • Energy associated with the velocity (v) of an object. • Example: A cool 1200 kg yellow car is running at 45 m/s. As a sharp turn is coming ahead the driver slows down to 20 m/s.
Work­Energy Theorem Reviewed - Physics and Astronomy at TAMU
Work on a Sliding Block Description: A box is pushed up a frictionless incline. Find the work done by gravity, the pushing force, and the normal force. A block of weight sits on a frictionless inclined plane, which makes an angle with respect to the horizontal, as shown. A
Physics Notes Class 11 CHAPTER 6 WORK, ENERGY AND POWER
Physics Notes Class 11 CHAPTER 6 WORK, ENERGY AND POWER Work When a force acts on an object and the object actually moves in the direction of force, then the work is said to be done by the force. Work done by the force is equal to the product of the force and the displacement of the object
Work, Power, and Energy Webquest Worksheet
Work, Power, and Energy Webquest Worksheet Work ... Draw and label a picture with force and distance to support your answer. Power ... takes them 80 sec to move from the bottom of the plane to the top of it, what is the power if they did 1600 J of work? Imagine a team of horses pulling a plow. If they pull the plow a distance of 100 meters in
Work and Energy Problem E - Santa Monica High School Physics
54 Holt Physics Problem Workbook NAME _____ DATE _____ CLASS _____ Work and Energy Problem E CONSERVATION OF MECHANICAL ENERGY PROBLEM The largest apple ever grown had a mass of about 1.47 kg. Suppose you hold such an apple in your hand.You accidentally drop the apple, then
Physics Fundamentals Work & Power Worksheet
Physics Fundamentals Work & Power Worksheet 9. Calculate the work needed to lift a block weighing 4 N a distance of 10 meters. 10. A bowler lifts her bowling ball a distance of 0.5 meters using 35 Joules of energy. What is the amount of force she used to lift the ball? 11. It took 50 J to push a chair 5 meters across the floor.
Science 9-Physics Worksheet 3-2—Work and Mechanical ...
Science 9 Unit 3—Physics Worksheet 3-2— Work and Mechanical Advantage Page 2 6. A force of 500 N is used to pull an object up an inclined plane. In order to move the object, the total amount of work done was 1500 Joules. Calculate the distance the object was moved. Show your work. Include proper units in your answer.
Physics Electrostatics Worksheet Solutions
Physics Electrostatics Worksheet Solutions Part I 1. One Coulomb is deﬂned as the amount of charge that (a) produces an electric ﬂeld of 1 volt/metre at a distance of 1 metre. (b) produces a potential of 1 volt at a distance of 1 metre. (c) when placed at each of two points which are separated by 1 metre produces a force of 1 newton.
Physics P Worksheet 6-2: Spring Potential Energy N
c. Do a pie chart analysis for this situation when (A) the spring is stretched beyond its maximum (from part b above) so it slides back, (B) when the box slides back through its equilibrium position, and (C) after the box oscillates back and forth until and comes to a stop. Assume your system includes the spring, box, and table top.
Unit 0, Introduction to Physics Worksheet 3, More Energy ...
Unit 0, Introduction to Physics Name_____ Worksheet 3, More Energy Pie Charts Date_____Period_____ Use pie charts to analyze the energy changes in each situation given. ... ©Modeling Workshop Project 2006/A TIME for PHYSICS FIRST 2 Unit 6, WS 1, Energy, v1.0 4. A superball is dropped and bounces up and down.
Physics Electric Potential Worksheet Solutions
Physics Electric Potential Worksheet Solutions Part I 1. When +3.0 C of charge moves from point A to point B in an electric ﬁeld, the potential energy is decreased by 27 J. It can be concluded that point B is (a) 9.0 V lower in potential than point A.
TAM 210 Worksheet 8 Solutions - courses.physics.illinois.edu
1) A pumping unit is used to recover oil. When the walking beam ABC is horizontal, the force acting in the wireline at the well head is 250 lb. The horse-head C weighs 60 1b and has a center of gravity at Cc. The walking beam ABC has a weight of 130 1b and a center of gravity at GB,
7. Kinetic Energy and Work Kinetic Energy - Physics
7. Kinetic Energy and Work Kinetic Energy: The kinetic energy of a moving object: k = 1 2 mv 2 • Kinetic energy is proportional to the square of the velocity. If the velocity of an object doubles, the kinetic energy increases by a
Physics Force Worksheet Solutions - Evergreen State College
Physics Force Worksheet Solutions Part I 1. When a horse pulls a wagon, the force that causes the horse to move forward is (a) the force he exerts on the ground. (b) the force he exerts on the wagon. (c) the force the ground exerts on him. (d) the force the wagon exerts on him. Answer (c):This is the only force acting on him in the forward ...
Work and Energy Chapter 5 Work, 5.1 Work Power 5.2 Energy ...
previous page, all five joules of input work were transformed to five joules of output work. An engineer would say the machine was 100 percent efficient, because all the input work became output work and none was lost. How friction affects real machines In real machines, the work output is always less than the work input.
Work and the Work/Kinetic Energy Theorem Potential Energy
Work and the Work/Kinetic Energy Theorem Potential Energy. ... The definition of work W =F Δx corresponds to the intuitive idea of effort: • More massive object will require more work to get to the same ... Use the work-kinetic energy theorem: x v = 10 m/s m = 25 kg k = 3000 N/m
Physics--Chapter 5: Work and Energy Chapter 5 Test Review
Physics--Chapter 5: Work and Energy Chapter 5 Test Review 10) A 40.0 N crate starting at rest slides down a rough 6.0 m long ramp inclined at 30.0° with the horizontal. The force of friction between the crate and ramp is 6.0 N. Find the velocity of the crate at the bottom of the incline. (6.4 m/s)
Work, Energy, and Power Name: Lesson 2 Work, Energy and ...
a. TME conserved b. TME increases c. TME decreases 7. A marble starts from rest and rolls down an inclined plane. Ignore friction. a. TME conserved b. TME increases c. TME decreases 8. A physics student runs up a flight of stairs at constant speed. a. TME conserved b. TME increases c. TME decreases 9. A baseball makes its flight through the air ...
Chapter 6 Homework Assignment – Work-Energy Theorem Work
Chapter 6 Homework Assignment – Work-Energy Theorem Work Qu. 1 A factory worker pushes a 30 kg crate a distance 4.5 m along a level floor at constant velocity by pushing horizontally on it. The coefficient of kinetic friction µk = 0.25. a) What magnitude of pushing force P must the worker apply? (Ans: 73.5 N)
Energy and Work Energy is the capacity to do work or to ...
Energy and Work Energy is the capacity to do work or to produce heat. ... Any energy transfer that reduces the energy of the system is a negative number. For us, ... Gases can do work. As a gas in a container expands it pushes against the atmosphere. The gas is doing work. The pressure the gas is
Kinetic Energy & The Work-Energy Theorem - Union College
Work-Energy Theorem The kinetic energy is dened as K = 1 2 mv2 The work done by the net force on the system equals the change in kinetic energy of the system Wnet = Kf Ki = K This is known as the work-energy theorem Units of K and W are the same (joules) Note: when v is a constant, K = 0 and Wnet = 0, e.g. Uniform circular motion 3
Page: Unit: Work, Energy & Momentum Conservation of Energy
2. A 70. kg pole vaulter converts the kinetic energy of running at ground level into the potential energy needed to clear the crossbar at a height of 4.0 m above the ground. What is the minimum velocity that the pole vaulter must have when taking off from the ground in order to clear the bar? Answer: s 8.9m
Chapter 7 – Kinetic energy, potential energy, work
II. Work-Kinetic Energy Theorem K K f K i W (7.4) Change in the kinetic energy of the particle = Net work done on the particle III. Work done by a constant force - Gravitational force: W F d mgdcos (7.5) Rising object: W= mgd cos180º = -mgd F g transfers mgd energy from the object’s kinetic energy.
Thermochemistry: Chemical Energy Energy = Work + Heat
6 Example 20 •How much work is done (in kilojoules), and in which direction, as a result of the following reaction? w = -0.25kJ Expansion, system loses -0.25kJ Example 21 •The following reaction has ΔE = –186 kJ/mol. •Is the sign of PΔV positive or negative? •What is the sign and approximate magnitude of ΔH? Contraction, PΔV is negative, w is positive
Chapter 6 Work, Kinetic Energy and Potential Energy
Work, Kinetic Energy and Potential Energy 6.1 The Important Stuﬀ 6.1.1 Kinetic Energy For an object with mass m and speed v, the kinetic energy is deﬁned as K = 1 2 mv2 (6.1) Kinetic energy is a scalar (it has magnitude but no direction); it is always a positive number; and it has SI units of kg · m2/s2. This new combination of the basic ...
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Energy, Kinetic Energy, Work, Dot Product, and Power 8.01t Oct 13, 2004. Energy Transformations • Falling water releases stored ‘gravitational potential energy’ turning into a ‘kinetic energy’ ... acting on the body is the product of the component of the force in the direction
The work-energy theorem states that the work done on an ...
How much work does that force do over a distance of 6.0m? Determine if work is done in the following scenarios: A teacher applies a force to a wall and becomes exhausted. A book falls off a table and free falls to the ground. A waiter carries a tray full of meals above his head by one arm straight across the room at constant speed.
Kinetic Energy & The Work-Energy Theorem
Work-Energy Theorem The kinetic energy is dened as K = 1 2 mv2 The work done by the net force on the system equals the change in kinetic energy of the system Wnet = Kf Ki = K This is known as the work-energy theorem Units of K and W are the same (joules) Note: when v is a constant, K = 0 and Wnet = 0, e.g. Uniform circular motion 3
CHAPTER 7:WORK,ENERGY,AND ENERGY RESOURCES
we"can"calculate"the"mass"of"food"required:" (3600 kcal)(0.35) 1260 kcal. (3600 kcal)(0.60) 2160 kcal; and (3600 kcal)(0.05) 180 kcal; fat carbohydrate protein = = = = = = E E E " Now,"from"Table"7.1"we"can"convert the"energy"required"into"the"mass"required" for"each"component of"their"diet:" 135.5 g. 9.3 kcal 1 g 2160 kcal 9.3 kcal 1 g 526.8 g ...
2. Work, Energy and Conservation of Energy – Tutori al 2
2.29 A vertical spring stores 0.962 J in spring potential energy when a 3.0-kg mass is suspended from it. (a) By what multiplicative factor does the spring potential energy change if the mass attached to the spring is doubled? (b) Verify your answer to part (a) by calculating the spring potential energy when a 6.0-kg mass is attached to the spring.
UCSD: Physics 8; 2006 Energy as a tool in physics The Flow ...
UCSD: Physics 8; 2006 2 Energy as a tool in physics • Energy is a very abstract notion, but it is a very useful and quantifiable notion • We use the conservation of energy to predict behavior – by setting E = mgh + mv2 = constant we can elucidate the value of the velocity at any height:

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