A ball of mass 0.5 kg moving east at 4 m/s collides with an identical ball at rest; afterwards the first ball moves at 1 m/s east. The second moves at:

  1. 5 m/s east
  2. 3 m/s east
  3. 4 m/s east
  4. 1 m/s west
Answer

B) 3 m/s east

0.5(4) = 0.5(1) + 0.5v Rightarrow v = 3 m/s. SLO P-11-B-11 · Application

Physics MCQ · More Momentum and Collisions MCQs · Practise