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A particle A suffers on oblique elastic collision with a particle B that

A particle A suffers on oblique elastic collision with a particle B that is at rest initially.If their masses are the same, then after the collision
1. their KE may be equal
2. A continues to move in the original direction while B remains constant
3. they will move in mutually perpendicular directions
4. A comes to rest and B starts moving in the direction of the original motion of A

Options

(a) 1,3
(b) 2,3
(c) 1,2
(d) 1,2,3

Correct Answer:

2,3

Explanation:

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