Two particles of different masses collid...

Two particles of different masses collide head on. Then for the system

loss of `KE` is zero, if it was perfect elastic collision

If it was perfect inelastic collision, the loss of `KE` of the bodies moving in opposite directions is more than that of the bodies moving in the same direction

loss of momentum is zero for both elastic and inelastic collision

`1,2` and `3` are correct

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