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A car travelling at a speed of30 kmph is brought torest in 8m by applying brakes. If the same car istravelling at 60 kmph, in what distance can it bebrought to halt with the same braking force? |
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Answer» S = u^2 / (2a) Same car will cause same retardation (a) in both cases. ∴ S ∝ u^2 S1 / S2 = (u1 / u2)^2S2 = S1 * (u2 / u1)^2S2 = 8 * (60 / 30)^2S2 = 32 m It will come to rest after 32 m |
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