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Center of Mass as an Average Point

A body of mas...

Question

A body of mass 5 kg is moving with a uniform velocity of 10m/s. It is acted upon by a force of 20N. What will be its velocity after 1 sec?

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Solution

$M = 5 k g$
a= $\frac{v - u}{t}$
$\frac{V - 10}{1}$
$f = 20 N$
$f = m \times a$
$20 N = 5 k g \times (V - 10)$
$4 = (v - 10)$
$v = 14$

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