A boy throws a ball with a velocity u at an angle θ with the hor

Question

A boy throws a ball with a velocity u at an angle θ with the horizontal. At the same instant he starts running with uniform velocity to catch the ball before it hits the ground. To achieve this, he should run with a velocity of :

Options:

A . u cos θ

B . u sin θ

C . u tan θ

D . √u2tanθ

Answer: Option A
:
A
The horizontal component of velocity of projection and the speed of the boy should be the same.

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