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WBJEE 2015 Math Solved Paper

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Question : 22

Total: 80

A particle starts moving from rest from a fixed point in a fixed direction. The distance s from the fixed point at a timet is given by s = t2 + at – b + 17, where a, b are real numbers. If the particle comes to rest after 5 sec at a distanceof s = 25 units from the fixed point, then values of a and b are respectively

10, -33
-10, -33
-8, 33
-10, 33

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