A block of mass m moving on a frictionless surface at speed V collides elastically with a block of same mass, initially at rest. Now the first block moves at an angle 
with its initial direction and has speed 
. The speed of the second block after collision is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
: As, the collision is perfectly elastic, so from conservation of energy we can write,
initial kinetic energy 
final kinetic energy
( 
speed of second block after collision)
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