A smooth sphere is moving on horizontal surface with a velocity vector (2vec(i) + 2vec(j))m//s immediately before it hit a vertical wall. The wall is parallel to vector vec(j) and coefficient of restitution between the sphere and the wall is e = 1/2. The velocity of the sphere after it hits the wall is

A smooth sphere is moving on horizontal surface with a velocity vector

1.	A smooth sphere is moving on horizontal surface with a velocity vector (2vec(i) + 2vec(j))m//s immediately before it hit a vertical wall. The wall is parallel to vector vec(j) and coefficient of restitution between the sphere and the wall is e = 1/2. The velocity of the sphere after it hits the wall is
Answer» `VEC(i) - vec(J)` `-vec(i) + 2 vec(j)` `-vec(i) - vec(j)` `2vec(i) - vec(j)` ANSWER :B