TS EAMCET 03 May 2019 Shift 2 Solved Paper

A ball is projected vertically up from ground. Boy ‘A’ standing at the window of first floor of a nearby building observes that the tune interval between the ball crossing him while going up and the ball crossing him while going down is 2 s. Another boy B standing on the second floor notices that time interval between the ball passing him twice, dining up motion and down motion is 1 s. Calculate the difference between the vertical positions of boy B and boy A. (Assume g = 10 m/s2)