WorksheetsPower Work Force Problems
Total questions: 15
Worksheet time: 15mins
How much work is done when a 45 N force moves a block 20m?
900 J
2.25 J
900 m
2.25 W
Eva applies 40 N force to move her bookcase 3 m, how much work did Eva do?
120 J
13.3 J
13.3 W
3 m
You do 90 joules of work in 30 seconds. How much power have you generated?
30 watts
3 watts
120 watts
270 watts
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
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
The SI Unit for Power
Newton (N)
Joule (J)
Second (s)
Watt (W)
What is the formula for Power?
E=mc2
W= F x d
P = W/t
What is the formula for Work?
E=mc2
W= F x d
P = W/t
W = 500 Joules
t = 25 seconds
P = ???
0.05 W
20 W
12500 W
2000 W
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
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
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
A machine does 5000 J of work in 25 seconds. What is its power output?
200 W
250 W
20 W
2 W
If a force of 60 N is applied to move a box 10 meters, how much work is done?
600 J
60 J
600 N
6 J
A light bulb uses 240 J of energy in 2 seconds. What is the power consumption of the bulb?
120 W
240 W
480 W
60 W
