Work, Energy and Power - JSS2 Basic science Past Questions and Answers - page 1
1
What is work?
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A
The ability to do work
B
The rate of doing work
C
When a force moves an object over a distance
D
The energy of motion
2
Which of the following is an example of potential energy?
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A
A moving car
B
A stretched rubber band
C
A flying bird
D
A spinning top
3
What is power?
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A
The ability to do work
B
The rate of doing work
C
The energy of motion
D
The stored energy in an object
4
Which equation represents work?
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A
W = F + d
B
W = F × d
C
W = F ÷ d
D
W = F - d
5
When a force is applied to an object but it does not move, what happens?
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A
Work is done
B
No work is done
C
Energy is transferred
D
Potential energy increases
6
Which form of energy is associated with motion?
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A
Potential energy
B
Kinetic energy
C
Thermal energy
D
Chemical energy
7
What does the term "power" measure?
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A
Ability to lift heavy objects
B
Rate of doing work
C
Stored energy in an object
D
Energy conversion
8
If you exert a force on an object but it does not move, what is the work done?
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A
Zero
B
Positive
C
Negative
D
Infinite
9
Which of the following is an example of kinetic energy?
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A
A stretched spring
B
Water stored in a dam
C
A moving car
D
A battery-powered flashlight
10
What is the formula for calculating power?
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A
P = W × t
B
P = W + t
C
P = W ÷ t
D
P = W - t
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