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- 1. Multiple Choice
A weightlifter lifts two 300 newton weights 1.5 meters off the ground. How much work has he done?600 J660 J900 J1200 J - 2. Multiple ChoiceYou do 90 joules of work in 30 seconds. How much power have you generated?30 watts3 watts120 watts270 watts
- 3. Multiple Choice
You move a 0.8 kg object five meters in 4 seconds. How much power have you generated?
160 watts
10 watts
6.4 watts
17 watts
- 4. Multiple ChoiceWhich of the following would produce the most power?A mass of 10 kilograms lifted 10 meters in 10 secondsA mass of 10 kilograms lifted 10 meters in 5 secondsA mass of 5 kilograms lifted 10 meters in 5 secondsA mass of 5 kilograms lifted 5 meters in 10 seconds
- 5. Multiple ChoiceA weightlifter lifts two 300 newton weights 1.5 meters off the ground. How much work has he done?600 J660 J900 J1200 J
- 6. Multiple Choice
if you push a cart with a force of 60 N for 2 m... how much work have you done
120 J
30 J
120 N
30 N
- 7. Multiple Choicework transferssweatenergyvelocityeffort
- 8. Multiple ChoiceWhat is the formula for work?Force = work x distanceDistance = force x workWork = force x distanceWork = force x mass
- 9. Multiple Choice
The equation for POWER is
power = mass x time
power = work / time
power = time / work
power = work x time
- 10. Multiple Choice
What is the relationship between Power and Work?
Power is the rate which Work is done
Work is not related to Power
Power is the result of work times the time it takes to complete it
- 11. Multiple Choice
Brutus is a weightlifter. He completes a lift in 3.5 s, what is the power of Brutus, if he performed 660.0J of work?
2310 J
He performs no work
189 J
- 12. Multiple ChoiceF=200 N
d=50 m
w=??4 J0.25 J250 J10,000 J - 13. Multiple ChoiceIf 150 Joules of work is needed to move a box 10 meters, what force was used?1500 N15 N1.5 N150 N
- 14. Multiple ChoiceHow much work is done when an 8 N force moves a block 7m?56 J1.42 J56 W0.88 J
- 15. Multiple ChoiceHow much work is done when a 45 N force moves a block 20m?900 J2.25 J900 m2.25 W
- 16. Multiple ChoiceEva applies 40 N force to move her bookcase 3 m, how much work did Eva do?120 J13.3 J13.3 W3 m
- 17. Multiple ChoiceHow far will 490 J raise a block weighing 7 N?6.53 m7 0m3430 m3430 J
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