MCQ Questions

Question No. 1

Complete the sentences.

Answer :

a) Work done = Force × ___.

b) The unit of work is the ___.

c) ___ is the ability to do work.

d) When work is done, ___ is the rate at which work is done, or energy transferred.

e) The unit of power is the ___.

Question No. 2

Do the following calculations.

Answer :

a) How much work is done if the box weighs 500 N and the distance lifted is 3 m?

b) What force is used to lift the box if 2 000 J of work is done and the distance lifted is 4 m?

c) What is the mass of the box if 1 000 J of work is done and the box is lifted 5 m? (A mass of 1 kg exerts a force of 10 N.)

d) What distance is the box lifted if the box weighs 500 N and 10 000 J of work is done?

Question No. 3

Explain the difference between potential energy and kinetic energy. Give two examples of each.

Answer :

Question No. 4

The scheme depicts three energy transfers that take place at a power station.Describe the energy transfers for stages 1, 2 and 3 in the power station diagram.

Answer :

Question No. 5

Beko and Dila race to the top of the stairs. Compare Beko and Dila’s power in racing up the stairs.

Answer :

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