Question

A scooterist applies brakes and bring his scooter tourist in 1.5 second if the retardation of the brakes is a metre per second square calculate the initial velocity of the scooter in SI system and kilometre per hour

Answer 1

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Given,


Initially velocity of the scooter =u=?

final velocity of the scooter = v=0

Time = t=1.5s

Retardation = -a = 5m/s

Acceleration = a = -5m/s ^2

V= u+at

0=u+(-5)×1.5

Initial velocity = u = 7.5m/s

Initial velocity in Km/h = 7.5×18/5

=27km/h

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Answer 2

Here is your solution

Given:-

Initially velocity of the scooter =u=?
final velocity of the scooter = v=0
Time = t=1.5s
Retardation = -a = 5m/s
Acceleration = a = -5m/s ^2

Now

V= u+at

0=u+(-5)×1.5

Initial velocity = u = 7.5m/s

Initial velocity in Km/h = 7.5×18/5

=27km/h

hope it helps you