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Given that the sum of displacement in the tth second and (t+1)th second is 100cm. Find the velocity after t seconds
St = u + a*(2t - 1)/2 and St + 1 = u + a*(2t + 1)/2
we have St + St + 1 = 2u + 2at = 2(u + at) = 2v = 100
v = 50 cm/s.
therefore the velocity after t seconds is 50 cm/s.
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