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- 1. Multiple ChoiceThe SI Unit for TimeNewton (N)Joule (J)Second (s)Watt (W)
- 2. Multiple ChoiceThe SI Unit for PowerNewton (N)Joule (J)Second (s)Watt (W)
- 3. Multiple ChoiceThe SI Unit for WorkNewton (N)Joule (J)Second (s)Watt (W)
- 4. Multiple Choice
What is the formula for Power?
E=mc2
W= F x d
P = W/t
- 5. Multiple Choice
What is the formula for Work?
E=mc2
W= F x d
P = W/t
- 6. Multiple ChoiceW = 500 Joules
t = 25 seconds
P = ???0.05 W20 W12500 W2000 W - 7. Multiple Choice
You do 90 joules of work in 30 seconds. How much power have you generated?
30 watts
3 watts
120 watts
270 watts
- 8. Multiple Choice
While rowing across the lake during a race, John does 3960 J of work on the oars in 60 seconds. What is his power output?
56W
100W
66W
None of the answers are correct
- 9. Multiple Choice
A mountain climber with a force of 90 N scales a 100 m cliff. How much work is done by the mountain climber?
1.11 W
90,000 J
0.9 J
9 W
- 10. Multiple Choice
A horse performs 15,000 joules of work pulling a wagon for 20 seconds. What is the horse's power?
750 W
300 W
2.25 J
- 11. Multiple Choice
In just one second, a certain coal-fired power plant produces enough electricity to do 900 J of work. What is the power output of this power plant?
1 W
833 W
66 W
900 MW
- 12. Multiple Choice
If it takes 50 seconds and 10 Joules move some books, calculate how much power is required to complete this task.
5 J
0.2 W
5 W
- 13. Multiple Choice
Shawn uses 45 N of force to stop the cart 1 meter from running his foot over. How much work does he do?
45 W
45 J
0.022 W
- 14. Multiple Choice
It takes 5 seconds and 250 joules to move a full wagon across the street. How much power is needed?
50 W
0.02 J
50 J
- 15. Multiple Choice
If you increase your work and decrease your time, you will have
more power
less power
same amount of power
power rating can not be determined
- Answer choicesTagsAnswer choicesTags