Question

a bus running at a speed of 18km per hr is stopped in 2.5 sec by applying brakes. calc the retardation produced.

Answer 1

u=18km/h
=5m/s
v=0m/s
t =2.5sec
Retardation =v-u /t
=0-18 /2.5
=-18 /2.5
=-18 X10/25
=-36/5
=-7.2m/s^2