A car initially at rest travels 40 metres in 2 seconds along a straight line with constant acceleration. What is the car's acceleration?

Equation of motion: These are the mathematical equations used to find the final velocity, displacements, and time, and so on of a moving object without taking into account the force acting on it.

These equations are only valid when the body's acceleration is constant and it moves in a straight line.

Given that:

Initial velocity u = 0

Distance, s = 40 m

Time t = 2 s

Using  s = ut + ½ at²

$40=0+\frac{1}{2}\times \mathrm{a}\times 2^2$

Acceleration a = 20 m/s²