An automobile, traveling at 40 km h - 1 , can be stopped at a distance of 40 m by applying brakes. If the same automobile is traveling at 80 km h - 1 , the minimum stopping distance in metres is (Assu

Question

An automobile, traveling at 40 km h - 1 , can be stopped at a distance of 40 m by applying brakes. If the same automobile is traveling at 80 km h - 1 , the minimum stopping distance in metres is (Assume no skidding):

TestHub · Accepted Answer

S = u 2 2 a S 1 S 2 = u 1 2 u 2 2 ⇒ S 2 = u 2 u 1 2 S 1 = 2 2 40 = 160 m

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