Question

Abus decreases its speed from 80km/h to 60km/h in 5 seconds. Find out the retardation of the bus.​

Answer 1

Explanation:

10/9 m per sec

first convert to m per sec and then use A= v-U / t

Answer 2

Explanation:

initial velocity (u) = 80km/h = 80×5/18 = 22.2m/s

final velocity (v) = 60km/h = 60×5/18 = 16.65m/s

time (t) = 5 seconds

retardation = v-u/t

= 16.65-22.2 / 5

= -5.55 / 5

= -1.11m/s2