Question

The balls, having linear momenta and , undergo a collision in free space. There is no extemal force acting on the balls. Let and be their final momenta. The following option(s) is (are) NOT ALLOWED for any non-zero value of and .

This question has multiple correct options
A

;

B

;

C

;

D

;

Hard
Updated on : 2022-09-05
Solution
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Correct options are A) and D)

Since there is no net external force acting on the two body system, the net momentum of the system must remain conserved. The final momentum must not have any components in and directions as both momenta are in direction. Hence options and are not possible.

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