Question

A bus is moving with speed of 90 km per hour on applying brakes speed reduces to 72 km per hour in 5 seconds find the retardation produced in the bus

Answer 1

v=u+at

v=72 km/hr=72000/3600 m/s=20 m/s

u=90 km/hr=90000/3600 m/s=25 m/s

t=5 secs

at=v-u

at=20-25

at= -5

a= -5/5

a= -1m/s^2

retardation is -1 m/s^2

hope this helps pls mark as brainliest

Answer 2

Hi here is your answer----->