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Two point prticles A and B are placed in...

Two point prticles `A` and `B` are placed in line on frictionless horizontal plane. If particle `A` (mass `1 kg`) is move with velocity `10 m//s` towards stationary particle `B` (mass `2kg`) and after collision the two move at an angle of `45^(@)` with the initial direction of motion, then find

a. velocites of `A` and `B` just after collision.
b. coefficient of restitution

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