Q.

A car moving with a speed of 50 km/hr can be stopped by brakes after at least 6 m. If the same car is moving at a speed of 100 km/hr the minimum stopping distance is

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a

12 m

b

18 m

c

24 m

d

6 m

answer is C.

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Detailed Solution

Stopping distance S=V22a

S V2s2s1=V2V12s26=100502S2=6×4S2=24m

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