Theory Questions – Causes of Motion

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Answer the following questions:

1. (a) Define force and state its SI unit.
(b) State the two types of solid friction.

2. Distinguish between a contact force and a field force. Give two examples of each.

3. State two:
(a) laws of solid friction;
(b) advantages of friction;
(c) methods of reducing friction.

4. Explain why it is easier to

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