A 3 kg body moving at 5 m/s collides with a 2 kg body moving at -2 m/s. They stick together. Their common velocity is:

  1. 4.4 m/s
  2. -2.2 m/s
  3. 2.2 m/s
  4. 1.1 m/s
Answer

C) 2.2 m/s

m1u1 + m2u2 = (m1 + m2)v Rightarrow v = 3(5) + 2(-2)5 = 2.2 m/s. SLO P-11-B-11 · Application

Physics MCQ · More Momentum and Collisions MCQs · Practise