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chinmay.g1 asked this question on Class IX » Science » Motion

A train starts from a station P with a uniform acceleration a1, for some distance and then goes with uniform retardation a2 for some more distance to come to rest at station Q. The distance between the stations P and Q is 4 km and the train takes 4 min to complete this journey, then 1/a1+1/a2 = how much?

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Please tell me faster!

Asked by chinmay.g1(student), on 6/9/10
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