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 The velocity with which it strikes the plane 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 The velocity with which it strikes the plane is...........
Answer» `(u)/(SQRT(3))` `(2u)/(sqrt(3))` `(sqrt(3)u)/(2)` u Answer :B