Question

A particle starts from rest and moves with a constant acceleration of $10{\text{ms}}^{-2}$ . Then the displacement in first $5\text{sec}$ of the motion will be

• A. $125\text{m}$
• B. $250\text{m}$
• C. $220\text{m}$
• D. $130\text{m}$

Answer 1

The correct option is A $125\text{m}$

As we know that
$s=ut+\frac{1}{2}a{t}^2$
here, $u=0$ (particle starts from rest so, initial velocity is zero)
$s=0+\frac{1}{2}\times 10\times 25$
$s=125\text{m}$