A body dropped from a height \[h\] with an initial speed zero, strikes – McqOptions

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1.	A body dropped from a height \[h\] with an initial speed zero, strikes the ground with a velocity\[3\,km/h\]. Another body of same mass is dropped from the same height \[h\] with an initial speed \[-{u}'=4km/h\] . Find the final velocity of second body with which it strikes the ground [CBSE PMT 1996]
A.	3 km/h
B.	4 km/h
C.	5 km/h
D.	12 km/h
Answer» D. 12 km/h

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