Question

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

• A. $200m$
• B. $80m$
• C. $400m$
• D. $40m$

Answer 1

The correct option is A $200m$

Given:
Initial velocity is: $u=0$
Acceleration is: $a=4m{s}^2$
Time is: $t=10s$

Using second equation of motion:

$s=ut+\frac{1}{2}a{t}^2$
$s=0\times 10+\frac{1}{2}\times 4\times {10}^2$
$=0+200=200m$