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WorksheetsCalculate Power
Total questions: 10
Worksheet time: 3hrs 30mins
Name
Class
Date
1.
What is power?
a)
transfer a force through a distance
b)
the rate of speed
c)
the rate of work being done
d)
transfer of space over time
2.
What is the unit of measurement for Power?
a)
Joules
b)
Newtons
c)
Watts
d)
Meters
3.
What is needed calculate power?
a)
work
b)
time
c)
mass
d)
distance
4.
The more POWER you use to move an object, the more work you do.
a)
True
b)
False
5.
W = 500 Joules
t = 25 seconds
P = ???
t = 25 seconds
P = ???
a)
0.05 W
b)
20 W
c)
12500 W
d)
2000 W
6.
Two workers use 200 J of work (energy) in 2 seconds. How much power is required?
a)
100 watts
b)
400 watts
c)
104 watts
d)
50 watts
7.
How much power is used if 350 Joules of work is used to push a box a distance for 5 seconds?
a)
70 watts
b)
1750 watts
8.
How much power is used if a force of 35 Newtons is used to push a box a distance of 10 meters in 5 seconds? (Hint: Solve for work first. This is a 2-step problem.)
a)
70 W
b)
3.5 W
c)
7 W
d)
350 J
9.
A set of pulleys is used to lift a piano weighing 1,000 newtons. The piano is lifted 3 meters in 60 seconds How much power is used? (Hint: This is a two step problem.)
a)
16.67 watts
b)
50 watts
10.
What is the difference between calculating power and work?
a)
Power takes into account the time it takes to complete a task
b)
Work takes into account the time it takes to complete a task
c)
Power is force/area
d)
Work is force/area
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