Question

A smooth sphere is moving on horizontal surface with a velocity vector (2 i +2j) m/s immediately
before it hit a vertical wall. The wall is parallel to vector i and coefficient of restitution between the
1) i-;
2) -1 +2j
3) -i-j
4) 2ij
sphere and the wall is e = 1/2. The velocity of the sphere after it hits the wall is​

Answer 1

Answer:

option 4 or 2 is correct I think so

Explanation:

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