Question

A force of 10 N act on a body of mass 5 kg what is displacement after 2 second when particle is initially at rest.

• A. 1
• B. 4
• C. 2
• D. 8

Answer 1

The correct option is B 4

$F=10N$

$m=5kg$

$d=?$ $u=0$

$t=2s$

$S=ut+\frac{1}{2}{at}^2$ $F=ma$ (according to newton's 2nd law)

or, $S=\frac{1}{2}\times 2^2\times a$ $10=5\times a$

$S=2a=2\times 2$ or, $a=2m/s^2$

$=4m$