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