A stone is thrown up from the foot of tower 50 m high with a velocity of 25 m/sec and at the same time another stone is dropped from the top of tower, the two stones will cross each other after a.3 sec b.5 sec c.4 sec d.4.5 sec e.2 sec

A stone is thrown up from the foot of tower 50 m high with a velocity of 25 m/sec and at the same time another stone is dropped from the top of tower, the two stones will cross each other after a.3 sec b.5 sec c.4 sec d.4.5 sec e.2 sec
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e. 2 sec
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