Physics
General
Easy

Question

A Wagon weighing 1000 kg is moving with a velocity 50 km h1 on smooth horizental rails. A mass of 250 kg is copped into il. The velocity with which it moves now is

  1. 2.5 km h-1
  2. 20 km h-1
  3. 40 km h-1
  4. 50 km h-1

The correct answer is: 40 km h-1

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