Question

A driver of a car travelling at 20 m/s along a road applies the brakes. The car comes to a stop at 130 m with a uniform deceleration. Calculate car's acceleration

Answer 1

Answer:

-1. 53m/s²

Explanation:

u = 20 m/s²

v= 0m/s²

s = 130 m

By third equation of motion

2as= v²-u²

2 ( a) ( 130) = 0²- 20²

260a = -400

a= -400/260

a = -1. 53m/s²