A smooth sphere is moving on a horizontal surface with velocity vector $$2i$$¯$$+2j$$¯ immediately before it hits a vertical wall. The wall is parallel to j¯ vector and coefficient of restitution between sphere and wall is $$e=12$$ . The velocity vector of sphere after it hits the wall is

Question

A  smooth sphere is moving on a horizontal surface with velocity vector $$2i$$¯$$+2j$$¯      immediately before  it hits a vertical wall.  The wall is  parallel to j¯      vector and  coefficient of restitution between sphere and wall is $$e=12$$     .  The velocity  vector of sphere after it hits the wall is

Infinity Learn · Accepted Answer

Component of velocity parallel to wall remain unchanged while $$i^$$  component will become $$=eux=($$−$$12)(2i$$¯$$)$$ or −i¯  Velocity vector of sphere after it hits the wall is −i¯$$+2j$$¯

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A smooth sphere is moving on a horizontal surface with velocity vector 2i¯+2j¯ immediately before it hits a vertical wall. The wall is parallel to j¯ vector and coefficient of restitution between sphere and wall is e=12 . The velocity vector of sphere after it hits the wall is

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