A particle is projected from a point O with velocity u in a direction making an angle alpha upward with the horizontal. At P it is moving at right angle so its initial direction of projection. Its velocity at P is

A particle is projected from a point O with velocity u in a direction

1.	A particle is projected from a point O with velocity u in a direction making an angle alpha upward with the horizontal. At P it is moving at right angle so its initial direction of projection. Its velocity at P is
Answer» SOLUTION :`V COS (90-ALPHA)=v SIN alpha=u cos alpha,v=ucotalpha`