1.

A body of mass 2kg moving on a horizontal surface with an initial velocity of 4 ms^(-1), comes to rest after 2 second. If one wants to keep this body moving on the same surface with a velocity of 4 ms^(-1), the force required is

Answer»

ZERO
2 N
4 N
8 N

Solution :`v=u+at , F=ma`


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