Question

A particle is projected from point P with velocity v1 at an angle 30° with the horizontal.Another particle is thrown from point Q vertically below the highest point of path followed by P. What is the necessary condition for the two particles to collide at the highest point?
1)v1+v2 2)v1=v2 3)v1=v2//2 4)v1=4v2

Answer 1

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Answer 2

Answer:

For the particles to collide at the highest point, their vertical displacement must be equal which is only possible when their vertical components are equal.

Therefore, v1sin30°=v2

v1/2=v2

This is the necessary condition for the two particles to collide at the highest point.

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