A particle projected from a poin A with velocityu sqrt(2) at an angle 45^(@) with horizontal. It strikes the plane BC at right angle Time taken for the collision is.........

A particle projected from a poin A with velocityu sqrt(2) at an angle

1.	A particle projected from a poin A with velocityu sqrt(2) at an angle 45^(@) with horizontal. It strikes the plane BC at right angle Time taken for the collision is.........
Answer» `((sqrt(3)+1)U)/(g)` `((sqrt(3)+1)u)/(sqrt(2)g)` `((sqrt(3)+1)u)/(2sqrt(3))` u Answer :B