1.

\[P,\,Q\] and \[R\] are three balloons ascending with velocities \[U,\,4U\] and \[8U\] respectively. If stones of the same mass be dropped from each, when they are at the same height, then                             [ISM Dhanbad 1994]

A.             They reach the ground at the same time
B.             Stone from \[P\] reaches the ground first
C.             Stone from \[R\] reaches the ground first
D.             Stone from \[Q\] reaches the ground first
Answer» C.             Stone from \[R\] reaches the ground first


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