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WorksheetsEnergy Quiz Review
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
If Nellie Newton pushes an object with twice the force for twice the distance, she does:
a)
The same work
b)
Twice the work
c)
Four times the work
d)
Eight times the work
2.
If Skelly the Skater's speed is is increased so he has twice the momentum, then his kinetic energy is increased by:
a)
Two
b)
Four
c)
Eight
d)
Zero
3.
How much power is expended if you lift a 50-N rock 10 meters in 1 second?
a)
500 W
b)
50 W
c)
10 W
d)
5 W
4.
If you lift one load up two stories, how much work do you do compared to lifting one load up only one story?
a)
Four times as much
b)
Twice as much
c)
The same amount
d)
One half as much
5.
True or False: More power is needed to carry a heavy suitcase slowly up a flight of stairs than to carry the same suitcase quickly up the same flight of stairs.
a)
True
b)
False
6.
An object that has kinetic energy must be:
a)
Moving
b)
Falling
c)
Elevated
d)
At rest
7.
True or false: The ratio of output force to input force for a simple machine is called its efficiency.
a)
True
b)
False
8.
True or false: the energy an object has by virtue of its motion is called its kinetic energy.
a)
True
b)
False
9.
True or false: the rate at which work is done is called power.
a)
True
b)
False
10.
True or false: The energy an object has by virtue of it location is called potential energy.
a)
True
b)
False
11.
How much work is done lifting 30 kg of bricks to a height of 20 m?
a)
2000 J
b)
1000 J
c)
6000 J
d)
0 J
12.
How much work is done on a 50 N rock that you lift 10 m straight up?
a)
500 J
b)
50 J
c)
10 J
d)
1 J
13.
A toy cart moves with kinetic energy of 40 J. What is its kinetic energy if the speed is doubled?
a)
100 J
b)
160 J
c)
400 J
d)
80 J
14.
A car that travels twice as fast as another when braking to a stop will skid:
a)
Twice as far
b)
Four times as far
c)
Depends on the mass of the cars
15.
An arrow in a bow has 70 J of potential energy. Assuming no energy is lost, how much kinetic energy will it have after it has been shot?
a)
140 J
b)
70 J
c)
50 J
d)
35 J
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