Home Physics System of Particles Rotational Motion Centre of Mass Two small spheres of equal mass, and heading…
Physics System of Particles Rotational Motion Centre of Mass MCQ (Single Correct)

Two small spheres of equal mass, and heading towards each other with equal speeds, undergo a head-on collision (no 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 initial velocity.
D
Their velocities must be reduced in magnitude

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Verified by Experts
The correct answer is:
B

(Easy) Nothing is mentioned about coefficient of restitution. Hence the only true statement is 'their final velcities may be zero.'

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