Question

explain that Frictional force is said to be a contact course​

Answer 1

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• A frictional force always acts to oppose the motion of an object over a surface and is an example of a contact force.
• This force is called friction. Whenever there is relative motion of two surfaces in contact, there is frictional resistance. When a body moves over another, it has to overcome friction.

Answer 2

Answer:

A frictional force always acts to oppose the motion of an object over a surface and is an example of a contact force. ... This force is called friction. Whenever there is relative motion of two surfaces in contact, there is frictional resistance

Explanation:

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