A shell of mass 
is moving horizontally with velocity 
and collides with the wedge of mass 
just above point 
as shown in the figure. As a consequence, wedge starts to move towards left and the shell returns with a velocity in 
-plane. The principle of conservation of momentum can be applied for
A
system ( 
) along any direction
) along any direction B
system ( 
) vertically
) vertically C
system 
horizontally
horizontally D
None of the above
Text Solution
Verified by ExpertsThe correct answer is:
C
In horizontal direction, net force on the system is zero. Therefore, principle of conservation of
momentum can be applied for system 
horizontally.
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