A 2 kg body moving at 6 m/s collides with a 4 kg body moving at 0 m/s. They stick together. Their common velocity is:

  1. -2 m/s
  2. 4 m/s
  3. 1 m/s
  4. 2 m/s
Answer

D) 2 m/s

m1u1 + m2u2 = (m1 + m2)v Rightarrow v = 2(6) + 4(0)6 = 2 m/s. SLO P-11-B-11 · Application

Physics MCQ · More Momentum and Collisions MCQs · Practise