A smooth sphere is moving on a horizontal surface with velocity vector 2i^{⋀}+2j^{⋀} just before it hits a vertical wall. The wall is parallel to j^{⋀} vector and the coefficient of restitution between the sphere and the wall is e=1/2.The velocity vector of the sphere immediately after it hits the wall is

Correct Answer is : −⋀i+2⋀j

NEET Exam Model Paper 1

Question : 101 of 180

Marks: +1, -0

A smooth sphere is moving on a horizontal surface with velocity vector 2

⋀

just before it hits a vertical wall. The wall is parallel to

⋀

vector and the coefficient of restitution between the sphere and the wall is e=

.The velocity vector of the sphere immediately after it hits the wall is

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