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Two balls with masses m(1)=3 and m(2)=5k...

Two balls with masses `m_(1)=3` and `m_(2)=5`kg have initial velocities `v_(1)=v_(2)=5m//s` in the directions shown in figure. They collide at the origin.
a. find the velocioty of the CM `3s` before the collision.
b. Find the position of the CM `2s` after the collision.

A

` 1 : 1`

B

`1 : 15`

C

`12 : 15`

D

`15 : 12`

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