1.

A body of mass 3 kg is moving along a straight line with a velocity of 24 ms^(-1). When it is at a point ‘P’ a force of 9 N acts on the body in a direction opposite to its motion. The time after which it will be at 'P' again is,

Answer»

8S
16s
12s
24s

Solution :When it reaches the point .P. again S = 0,
USING `a=(F)/(m), S=ut+(1)/(2)at^(2)`


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