Question

A body starts from rest and accelerates at $10m{s}^{-2}$ for $15s$. Find its final velocity.

• A. $1.5m{s}^{-1}$
• B. $\frac{2}{3}m{s}^{-1}$
• C. $150m{s}^{-1}$
• D. $50m{s}^{-1}$

Answer 1

Answer: (C)

$150m{s}^{-1}$

Let us use: $v=u+at$
Here, $u=0;a=10m{s}^{-2}$ and $t=15s$
$\therefore$$v=0+(10\times 15)=150m{s}^{-1}$