Question

During one dimensional collision or head on collision :

a) The bodies move along the line joining their centre of mass before and after collision.
b) The bodies should move in opposite direction.
c) The bodies change their direction after collision.
d) The bodies move along the line joining their centre of mass before and after collision either in same direction or in opposite direction.

• A. Only a is correct
• B. Only a & b are correct
• C. a, b & c are correct
• D. Only a and d are correct

Answer 1

Answer: (D)

Only a and d are correct

By the definition of head on collision, the two bodies have to move along the line joining their centers and their velocities can be in any directions (only two possible here).