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1.Give a example for NEWTONS 1 LAW that is law of inrtia?

2.what is mass and velocity?


what is friction?

4.what are 3 types of friction



The rate of change of displacement is known as velocity 
the attraction created between two rough surfaces is known as friction
one type of friction is rolling friction

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plzzzzz mark me as the best if you liked my answer
The attraction created between two surfaces is known as friction. And it can stop an object.

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