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The answer to each of the questions is a single digit integer ranging from 0 to 9.
A very broad elevator is going up vertically with a constant acceleration of 2 m/s2. At the instant when its velocity is 4 m/s a ball is projected from the floor of the lift with a speed of 4 m/s relative to the floor at an elevation of 30o. The time taken by the ball to return the floor is second. Find x. (g = 10 m/s2)
3 Components of velocity of ball relative to lift are ux = 4 cos 30o = 2√3 m/s and uy = 4 sin 30o = 2 m/s T = (2u_y)/12=u_y/6=2/6=1/3 s x = 3
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