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Two particles move in a uniform gravitat...

Two particles move in a uniform gravitational field with an acceleration g. At the initial moment the particles were located over a tower at one point and moved with velocities `v_1 = 3m//s and v_2= 4m//s` horizontally in opposite directions. Find the distance between the particles at the moment when their velocity vectors become mutually perpendicular.

A

`5m`

B

`7sqrt3m`

C

`(7sqrt3)/(5)m`

D

`7//2 m`

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The correct Answer is:
C
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