Question

a car initially moving with a velocity of 18km/hr comes to stop in 2sec find retardation of the car​

Answer 1

Answer:

Velocity, v= 60×60s

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18×1000m

18×1000m

18×1000m =5m/s

18×1000m =5m/sUsing formula v=u−at, where v=0 and u=5m/s

18×1000m =5m/sUsing formula v=u−at, where v=0 and u=5m/sTherefore, retardation, a= u/t

5m/s

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2s

= 2.5m/s