An automobile is travelling at when the driver suddenly applies the brakes

PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

An automobile is travelling at

20\,\text{m\,s}^{-1}

when the driver suddenly applies the brakes, producing a uniform retardation of

5\,\text{m\,s}^{-2}

. Calculate the distance the car travels before coming to rest.