Question

A car moving along a straight highway with speed of 126 km h^-1 is brought to a stop within a distance of 200 m.Calculate the retardation of the car​

Answer 1

Answer:

time taken =distance /speed

t=200/126×5/18

t=200/35

a=(v-u)/t

a=(0-35)200/35

a=-200m/sec.^2

retardation=200m/sec.^2