A car travelling at a speed of 30 km/hour is brought to a halt in 8 m by applying brakes. If the same car is travelling at 60 km/hour, it can be brought to a halt with the same braking force in

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answer is 32.

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Detailed Solution

s∝u2 i.e. if speed becomes double then stopping distance will become four times i.e. 8×4=32 m

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