

(a) 2.0 x 103 J, (b) 2.00 x 105 J, 5. A 10.0 kg rock is at the top of a 20.0 m. tall hill. How much potential energy does it have? 17. You use 35 J of energy to move a 7.0 N object. How far did you move it? Chapter 10 PowerPoint Lecture (Circular Motion) Chapter 13 PowerPoint Lecture (Universal Gravitation) Chapter 14 PowerPoint Lecture (Satellite Motion). 4. Calculate the potential energy of a 5.00 kg object sitting on a 3.00 meter high ledge. 14. You move a 25 N object 5.0 meters. How much work did you do? Work and Power 1. Calculate the work done by a 47 N force pushing a pencil 0.26 m. 3. How high would you have to lift a 1000. kg car to give it a potential energy of: 18. You do 45 J of work in 3.0 seconds. How much power do you use? 3. Calculate the work done by a 2.4 N force pushing a 400. g sandwich across a table 0.75 m wide. 5. If a small motor does 520. J of work to move a toy car 260. m, what force does it exert? endstream endobj xref 0 5 0000000000 65535 f 0000000016 00000 n 0000000075 00000 n 0000000120 00000 n 0000000210 00000 n trailer. 20. A 60. watt light bulb runs for 5.0 seconds. How much energy does it use? 6. A 75.0 kg man pushes on a 5.0 x 105 ton wall for 250 s but it does not move. How much work does he do on the wall? (2000 lb = 1 ton; 0.454 kg = 1 lb). 2. How fast must a 1000. kg car be moving to have a kinetic energy of: (a) 2.0 x 103 J, (b) 2.0 x 105 J, account and begin making your own review games. 8. A 4.00 kg rock is rolling 10.0 m/s. Find its kinetic energy. 9. An 8.0 kg cat is running 4.0 m/s. How much kinetic energy does it have? Chapter 10 Student Notes (Circular Motion) Chapter 13 Student Notes (Universal Gravitation) Chapter 14 Student Notes (Satellite Motion). 7. How high up is a 3.00 kg object that has 300. J of energy? 4. How much work is it to lift a 20. kg sack of potatoes vertically 6.5 m? 13. How much power does it take to lift 30.0 kg 10.0 m high in 5.00 s? 15. You carry a 20. N bag of dog food up a 6.0 m flight of stairs. How much work was done? 6. A 25 N object is 3.0 meters up. How much potential energy does it have? 2. Calculate the work done by a 47 N force pushing a 0.025 kg pencil 0.25 m against a force of 23 N. 12. How much power does it take to lift 30.0 N 10.0 m high in 5.00 s? 16. You push down on a 3.0 N box for 10. minutes. How much work was done? 19. A car uses 2,500 Joules in 25 seconds. Find power. .
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Energy worksheet conceptual physicsnergy worksheet conceptual physics
