A car moving with a speed of 50 kmh-1 can be stopped by brakes after atleast 6m. If the same car is moving at a speed of 100 kmh-1, the minimum stopping distance is:

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12m

18m

24m

answer is C.

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Detailed Solution

Stopping distance, S=u22a⇒ S2S1=u2u12⇒S26=100502=4⇒ S2=24m

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