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
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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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Hi here is your answer----->
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