Question

What are contact force?
Please answer me.
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Answer 1

Explanation:

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A contact force is any force that requires contact to occur. Contact forces are ubiquitous and are responsible for most visible interactions between macroscopic collections of matter. Pushing a car up a hill or kicking a ball across a room are some of the everyday examples where contact forces are at work.

Answer 2

Explanation:

Frictional force , Normal force , Tensional force