Question

Question 4
A racing car has a uniform acceleration of $4m{s}^{-2}$. What distance will it cover in 10 seconds after start?

Answer 1

Given, intial velocity of the car, $u=0$, acceleration $a=4m{s}^{-2}$, and time, $t=10s$
Let $s$ be the distance covered.
We know, from second equation of motion $s=ut+\left(\frac{1}{2}\right)a{t}^2$.
$\Rightarrow$$s=0\times 10+\left(\frac{1}{2}\right)\times 4\times {10}^2$
$=0+\left(\frac{1}{2}\right)\times 4\times 100$
$=\left(\frac{1}{2}\right)\times 400m$
$=200m$