Fri September 21, 2012 By:
Q1 ) A stone is allowed to fall from the top of a tower of 100 m height and at the same time another stone is projected vertically upwards from the ground with the velocity of 25m/s . Calculate when and where the two stones will meet ?

Dear Sir , I faced difficulty in solving the following problem .

Expert Reply
Fri September 21, 2012
Let A be the top of a tower and B its foot. Let the two balls meet at C after time t.
Let, AC = x, then BC = 100-x.
Taking vertical downward motion of the ball dropped from the top, we have
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