A 1 kg ball at 4 m/s collides elastically with a 1 kg ball at rest. The kinetic energy of the second ball afterwards is:

  1. 4 J
  2. 8 J
  3. 16 J
  4. 2 J
Answer

B) 8 J

It takes all the velocity: 12(1)(4)^2 = 8 J. SLO P-11-B-12 · Application

Physics MCQ · More Momentum and Collisions MCQs · Practise