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Comprehension # 2 When two bodies coll...

Comprehension # 2
When two bodies collide normally they exert equal and opposite impulses on each other. Impulse `=` change in linear momentum. Coefficient of restitution between two bodies is given by :- `e = |"Relative velocity of separation"|/|"Relative velocity of approach"| = 1`, for elastic collision.

Two bodies collide as shown in figure. During collision they exert impulse of magnitude `J` on each other.
If the collision is elastic, the value of `J` is ............. `Ns`.

A

`10//3`

B

`5//4`

C

`8//3`

D

`3//2`

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Comprehension # 2 When two bodies collide normally they exert equal and opposite impulses on each other. Impulse = change in linear momentum. Coefficient of restitution between two bodies is given by :- e = |"Relative velocity of separation"|/|"Relative velocity of approach"| = 1 , for elastic collision Two bodies collide as shown in figure. During collision they exert impulse of magnitude J on each other. For what value of J (in N-s ) the 2 kg block will change its direction of velocity :-

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Show that in a perfectly elastic collision , the relative velocity of seperation after collision is equal to relative velocity of approach before collision .