When two equal masses collide head-on elastically (one at rest), they:

  1. exchange velocities
  2. both stop
  3. stick together
  4. move together at half speed
Answer

A) exchange velocities

The moving one stops and the other moves off with its velocity. SLO P-11-B-12 · Application

Physics MCQ · More Momentum and Collisions MCQs · Practise