Question

A racing car has a uniform acceleration of 4 ms^-2. What distance will it cover in 10 s after start?

Answer 1

Step 1: Given data:

1. The car has acceleration, $a=4m{s}^{-2}$.
2. We know that the car would be started from rest, hence the initial velocity $u=0m/s$.

Step 2: Finding the distance covered in 10 seconds:

By using the 2^nd equation of motion,

$s=ut+\frac{1}{2}a{t}^2$

Where s is the distance covered, a is the acceleration, t is time, and u is the initial velocity.

Putting the values,

$s=\left(0\right)\left(10\right)+\frac{1}{2}\left(4\right){\left(10\right)}^2=2\times 100=200m.$

Hence, the racing car has covered 200 m distance in 10 s.