name: the ultimate work/energy/power assignment energy assignment answers.pdf · 40. b) 1.2 j c)...
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Name:
The Ultimate Work/Energy/Power Assignment
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Scholarship Questions! Really neat ones!
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Answers:
1. b
2. d
3. a
4. b
5. b
6. b
7. c
8. a
9. c
10. c
11. b
12. c
13. v=20.7 m/s
14. b) 35 J c) the force applied to the
lawnmower
15. a) .90 J b) 7.7 m/s c) 20%
16. a) 1380 J b) 580 J c) 42%
17. c
18. b
19. a) 7.6 W b) 38 W
20. 18 m/s
21. b) 2.85 x 104 J
22. a) 1.16 x 104 J b) 190 N
23. a) 50 kg b) ½ of the mass
24. a
25. b
26. c
27. c
28. c
29. b
30. b
31. b
32. c
33. c
34. a) 9.1 m b) see my solution key
35. c
36. b
37. b
38. a
39. c
40. b) 1.2 J c) the work done on the
spring or the potential energy
stored in the spring
41. v=21 m/s
42. a) 23.1 m/s b) 42.9 m