Work, Energy, And Power - SS1 Physics Past Questions and Answers - page 1
1
Which of the following quantities is a measure of the amount of work done?
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A
Energy
B
Power
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C
Force
D
Work
2
The unit of work is:
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A
Joule
B
Watt
C
Newton
D
Pascal
3
Which of the following statements about energy is correct?
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A
Energy can be created
B
Energy can be destroyed
C
Energy can be converted from one form to another
D
Energy does not play a role in physical processes.
4
The energy possessed by an object due to its position or condition is called:
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A
Kinetic energy
B
Potential energy
Â
C
Mechanical energy
D
Thermal energy
5
Which of the following equations represents the relationship between work, force, and distance?
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A
W = P/t
B
W = mgh
C
W = Fd
D
W = KE + PE
6
The conservation of energy principle states that:
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A
Energy cannot be created or destroyed, only transferred or transformed
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B
Energy can be created but cannot be destroyed
C
Energy can be destroyed but cannot be created
D
Energy is not conserved in physical processes.
7
Which of the following factors affects the amount of gravitational potential energy of an object?
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A
Mass of the object
B
Acceleration due to gravity
Â
C
Height of the object
D
All of the above
8
A force of 20 N is applied to move an object at a distance of 5 meters. Calculate the work done.
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9
A car of mass 1000 kg accelerates from rest to a speed of 20 m/s. Calculate the kinetic energy of the car.Â
Â
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10
An object of mass 2 kg is lifted vertically to a height of 10 meters. Calculate the potential energy of the object.
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