57. If a body moves in such a way that its velocity increases by equal amount in equal intervals of time, it is said to be moving with
59. Time required to stop a car moving with a velocity 20 m/sec within a distance of 40 m, is
61. A particle moves with a velocity of 2 m/sec in a straight line with a negative acceleration of 0.1 m/sec2. Time required to traverse a distance of 1.5 m, is
62. A particle moves along a straight line such that distance x traversed in t seconds is given by x = t2(t + 1), the acceleration of the particle, will be
63. A ball is dropped from the top of a vertical tower 60 m high and another ball is projected from the foot of the same tower upwards at the same time. If they meet at a height of 18 m, the velocity of projection of the second ball, is
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