hmm i think all school's are open
define contact force
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A force which can be exerted by an object on another object only through physical touching is called a contact force. The example of contact forces are: 1) Muscular force.
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Hiii
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.
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