Question

The velocity of a body moving with a uniform acceleration of $2m/s^2$ is $10m/s$ .Its velocity after an interval of $4s$ is

• A. $12m/s$
• B. $14m/s$
• C. $16m/s$
• D. $18m/s$

Answer 1

The correct option is D $18m/s$

Given,

$u=10m/s$

$a=2m/s^2$

$t=4sec$

Acceleration, $a=\frac{v-u}{t}$

$2=\frac{v-10}{4}$

$v=10+8=18m/s$

The correct option is D.