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- 1. Multiple Choice
If you use 30 J of energy to move an object, you have done ____ J of work.
3
10
30
0
- 2. Multiple Choice
You push a crate with a force of 100 N for 5 meters. How much work did you do?
500 J
100 J
50 J
5 J
- 3. Multiple Choice
How much power is generated by Ashley (50 kg) running up a 6 m flight of stairs in 5 seconds?
60 W
62 W
600 W
1500 W
- 4. Multiple Choice
If you carry a 5 kg box across the room at a constant velocity
you do no work.
you do some work.
you do negative work.
Cannot be determined.
- 5. Multiple Choice
How much power was generated from 0-4 seconds?
1100 W
4 W
267 W
1600 W
- 6. Multiple Choice
How much work is done?
9 J
18 J
27 J
36 J
- 7. Multiple Choice
If you run up the stairs faster you will
do more work.
do less work.
generate more power.
generate less power.
- 8. Multiple Choice
What is the kinetic energy of a 10 kg ball moving at 3 m/s?
15 J
30 J
45 J
90 J
- 9. Multiple Choice
A 5 kg cat falls off a 3 m tall fridge. What is the cat's PE as it starts to fall?
15 J
30 J
150 J
1470 J
- 10. Multiple Choice
What is the mass of an object with 1200 J of PE when it is 5 meters above the ground?
10 kg
24 kg
100 kg
240 kg
- 11. Multiple Choice
A boy pushes a lawn mower with a force of 300N at an angle of 25 degrees from horizontal. It takes 1 hour to mow a lawn 2 km in total distance. How much power was generated?
70 W
0.15 W
151 W
543,785 W
- 12. Multiple Choice
Jack pushes a baby stroller with a force of 25N and performs 1000 J of work. How far did he push the mower?
0.025 kilometer
25000 meters
40 meters
none of these - 13. Multiple Choice
A pendulum hanging from a 3 m rope, with a mass of 1 kg, is pulled to an angle of 35 degrees from vertical. How much GPE does it have before being released?
5.3 J
24.1 J
29.4 J
50 J
- 14. Multiple Choice
This weight lifter required 1029.7 newtons of force to bring the weights to a height of approximately 2.31 m in 9 seconds. How much power did he have?
264 Watts
1029 Watts
2,377 Watts
4,009 Watts
- 15. Multiple Choice
Is this an example of work?
Yes
No
- 16. Multiple Choice
A mover pulls a fridge up a 5 m long ramp, at a 20 degree angle to the ground. If the fridge has a mass of 200 kg, how much GPE does it have on the truck?
1000 J
9218 J
Not enough information to solve
3355 J
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