A bullet of mass 
is fired from a rifle with a velocity of 
. After passing through a mud wall 
thick, velocity drops to 
What is the average resistance force of the wall?
A
B
C
D
None
Text Solution
Verified by ExpertsThe correct answer is:
A
: Mass of bullet 
thickness 
cm 
By work energy theorem
work done by average resistance offered by the wall 
charge in 
of bullet
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