A smooth sphere is moving on a horizontal surface with velocity vector $$3i$$∧$$+j$$∧ immediately before it hits a vertical wall. The wall is parallel to the vector j∧ and the coefficient of restitution between the wall and sphere is $$1/3$$. The velocity vector of the sphere after it hits the wall is :

Question

A smooth sphere is moving on a horizontal surface with  velocity vector $$3i$$∧$$+j$$∧      immediately  before it hits a vertical wall. The wall is parallel to the vector j∧     and the coefficient of restitution between the wall  and sphere is $$1/3$$. The velocity vector of the sphere after it hits the wall  is :

Infinity Learn · Accepted Answer

Along perpendicular of walls $$Vx=$$−eux   $$Vx=$$−$$13$$×$$3$$     $$Vr=ur=j^$$  V−$$1=V$$      x−$$1+V$$      y−$$1=$$−$$i^+J^$$

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A smooth sphere is moving on a horizontal surface with velocity vector 3i∧+j∧ immediately before it hits a vertical wall. The wall is parallel to the vector j∧ and the coefficient of restitution between the wall and sphere is 1/3. The velocity vector of the sphere after it hits the wall is :

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