Question

a bus is moving with velocity of 90 km/h if the bus is stopped in 8second by applying the brakes calculate retardation​

Answer 1

Answer:

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

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