Question

A, B and C are three balloons ascending with velocities U, 3U and 9U respectively. If stones of the same mass are dropped from each, when all the three balloons are at the same height, then

• A. All 3 stones will reach the ground at the same time.
• B. Stone from balloon A reaches the ground first.
• C. Stone from balloon B reaches the ground first.
• D. Stone from balloon C reaches the ground first.

Answer 1

The correct option is B

Stone from balloon A reaches the ground first.

Balloon A has the smallest upward velocity thus stone from balloon A will reach first to the ground. The higher upward velocities of the other balloons will not allow the stones form those balloons to fall down with the same ease as that of the stone from the slowest balloon.