Physics-
General
Easy
Question
A particle of mass m moving with horizontal speed 
as shown in figure. If 
than for one dimensional elastic collision, the speed of lighter particle after collision will be
in original direction
- opposite to the original direction
opposite to the original direction
- in original direction
in original direction
opposite to the original direction
opposite to the original direction
in original direction
The correct answer is: in original direction
Substituting 
the lighter particle will move in original direction with the speed of 
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