Q.

Is it true that in a world without friction, the sliding body would never come to rest?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is true.
Friction is a kind of resistive force which opposes the required action force. A sliding body moves against friction by overcoming the frictional force. If it does not have the energy to overcome the resistive force, then the body comes to rest. Hence, if there is no frictional force in the world, the body would never come to rest.
 
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