Question

A motorcycle is travelling at the speed of 30m/s .Suddenly the driver applies brakes.The motorcycle decelerates and stops at a distance of 100m.His deceleration is *​

Answer 1

Explanation:

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Answer 2

Given, u= 0 m/s

v = 30 m/s

s = 100 m

a = ???

We know that ,

$v {}^{2} = u {}^{2} + 2as$

So , (30)^2 = (0)^2 + 2 × a × 100

900 = 0 + 200 a

900 = 200 a

a = 900/200 m/s

a = 4.5 m/s