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Two small spheres of equal mass, and hea...

Two small spheres of equal mass, and heading towards each other with equal speeds, undergo a head on collision `(` external force acts on system of two spheres `)`. Then which of the following statement is correct ?

A

Their final velocities must be zero

B

Their final velocities may be zero

C

Each must have a final velocity equal to the other's intial velocity.

D

Their velocities must be reduced in magnitude.

Text Solution

Verified by Experts

The correct Answer is:
B
`(`Easy `)` Nothing is mentioned about coefficient of restitution. Hence the only true statement is their final velocities may be zero.
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