A particle of mass m is moving in a straight line with momentum p. Starting at time t = 0, a force F = kt acts in the same direction on the moving particle during time interval T, so that its momentum changes from p to 3p. Here, k is a constant. The value of T is (a) 2p k 2√ P Р k (b) 2, (c) 2k V p р k 2√// р (d) 2
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