Question

A motorcycle is traveling with a speed 72km/hr. How long will it take to travel a distance of 100m.
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Answer 1

Answer:

72000m/60min=1200m

1200m/60sec=20m/second

100/20=5 second

Answer 2

1 m/s2

u=72hkm=72×185=20m/s

Now v2=u2+2as

0=(20)2+2a(200)

0=400+400a

400a=−400

retardation =−a=1m/s2

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