What is a contact force? Give some examples of it and explain why they are contact forces? [3 MARKS]

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Answer: 1 Mark
Example: 1 Mark
Explanation: 1 Mark

Force applied by direct touching an object is called contact force. Like me pushing a wall i.e. muscular force or frictional force etc. All of them require contact for their application. You cannot push something without toching it. Friction will not act if two surfaces are not in contact.

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What is a non contact force? Give some examples of it and explain why they are non-contact forces? [3 MARKS]

Explain giving two examples each of :
(a) Contact forces, and (b) Non-o contact forces.

Define contact and non -contact forces. Give 3 examples of each.

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