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

Answer: We are given that the car is initially at rest. This means that 

Initial velocity (u) = 0 ms-1

Acceleration (a) = 4 ms-2

Time period (t) = 10 s

Let us find out as to what distance it will cover in 10 s after start.

We will use the following formula:

Second motion equation says that distance (s) is: 

s = ut+ 1/2 at2

Therefore, the total distance that the car will cover will be:

s = 0 * 10m + 1/2 (4ms-2) (10s)2

= 200 meters

As a result, after 10 seconds, the car will have covered a distance of 200 metres.