Question

question 9 of 25
in which type of collision do the two objects always have equal velocity after
the collision?

a. inelastic

b. elastic

c. no type of collision

d. perfectly inelastic

Explanation:

To determine the correct answer, we analyze the types of collisions:

• Inelastic Collision: Kinetic energy is not conserved, and objects may or may not stick together. Their velocities after collision are not necessarily equal.
• Elastic Collision: Both momentum and kinetic energy are conserved. Objects bounce off each other, so their velocities after collision are different (in direction or magnitude, or both).
• Perfectly Inelastic Collision: Objects stick together after the collision, so they move with the same velocity. This is the key characteristic of a perfectly inelastic collision.
• Option C is incorrect because a perfectly inelastic collision does result in equal velocities.

Answer:

D. Perfectly inelastic