One Line Answer

A force of 10 N acts on a body of mass 2 kg for 3 s, initially at rest. Calculate:

The velocity acquired by the body.

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#### Solution

Time for which force is applied =3 s.

Mass of the body = 2 kg.

Initial speed of body = 0 ms^{-1}

Force applied = 10 N.

We know F X t = m (v - u)

10 X3 = 2 (v- 0)

v = 15 ms^{-1}.

Concept: Concept of Weight

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