Question

A body, initially at rest, starts moving with a constant acceleration $2m{s}^{-2}$. Calculate the velocity acquired in 5 s.

• A. $2m{s}^{-1}$
• B. $5m{s}^{-1}$
• C. $7.5m{s}^{-1}$
• D. $10m{s}^{-1}$

Answer 1

The correct option is D $10m{s}^{-1}$

Given,

Initial velocity, $u=0$

Acceleration, $a=2m{s}^{-2}$

Time, $t=5s$

$v=u+at$

$v=0+(2\times 5)=10m{s}^{-1}$