A 1000 kg body moving at 20 m/s collides with a 1500 kg body moving at 0 m/s. They stick together. Their common velocity is:

  1. 4 m/s
  2. 8 m/s
  3. 16 m/s
  4. -8 m/s
Answer

B) 8 m/s

m1u1 + m2u2 = (m1 + m2)v Rightarrow v = 1000(20) + 1500(0)2500 = 8 m/s. SLO P-11-B-11 · Application

Physics MCQ · More Momentum and Collisions MCQs · Practise