Question

The brakes applied to a car produce an acceleration of 6 m/s2 in the opposite direction to the motion. If the car takes 2s to stop after the application of brakes, calculate the distance it travels during this time.

Answer 1

Solution:-

given by:-

》acceleration= 6m/s^2 , v= 0 , t= 2s u= find

by formula

》u = v+at

》u= 0+6×2

》u= 12m/s

by formula

》v^2 = u^2+2as

》0 = 144+2×(-6×s)

》-12s = -144

》s = 144/12

》s=12m