1.

A stone is shot straight upward with a speed of 20 m/sec from a tower 200 m high. The speed with which it strikes the ground is approximately                             [AMU (Engg.) 1999]

A.             60 m/sec         
B.             65 m/sec
C.             70 m/sec
D.                      75 m/sec
Answer» C.             70 m/sec


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