A ball P is dropped vertically and another

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A ball $P$ is dropped vertically and another ball Q is thrown horizontally with the same velocities from the same height and at the same time. If air resistance is neglected, then

A

Ball P reaches the ground first

B

Ball Q reaches the ground first

C

Both reach the ground at the same time

D

The respective masses of the two balls will decide the time

A ball $P$ is dropped vertically and another ball Q is thrown horizontally with the same velocities from the same height and at the same time. If air resistance is neglected, then

Vertical component of velocities of both the balls are same and equal to zero. So $t = \sqrt {\frac{{2h}}{g}} $