A particle of mass 
moves with a velocity of 
towards a wall, which is moving with velocity 
. If the particle collides with the wall elastically, the speed of the particle just after the collision is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
As we know,
Velocity of separation 
Velocity of approach ( 
collision is elastic)
- 5 
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