In this question, a statement of assertion 
is followed by a statement of reason 
. Mark the correct choice as:
Assertion: n small balls each of mass 
colliding elastically each second on surface which velocity u. The force experienced by the surface is 
.
Reason: On elastic collision, the ball rebounds with the same velocity.
Text Solution
Verified by ExpertsThe correct answer is:
A
In elastic collision, kinetic energy remains conserved, therefore the ball rebounds with the
same velocity. According to Newton's second law
change in linear momentum.
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