Question

The acceleration of the particle moving in $x-$direction with an initial velocity $8\text{m/s}$ is $3{\text{m/s}}^2$. Find its velocity at $t=2s$.

• A. $14\text{m/s}$
• B. $20\text{m/s}$
• C. $18\text{m/s}$
• D. $60\text{m/s}$

Answer 1

The correct option is A $14\text{m/s}$

Using first equation of motion, we get
$v=u+at$
$v=8+3\times 2$
$v=14\text{m/s}$