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Question 1. A ball of mass 1 kg moving with a velocity of 2 m/sec collides a stationary ball of mass 2 kg and comes to rest after impact. The velocity of the second ball after impact will be
  1.    Zero
  2.    0.5 m/sec
  3.    1.0 m/sec
  4.    2.0 m/sec
Answer: Option C

Question 2. A ball moving with a velocity of 5 m/sec impinges a fixed plane at an angle of 45° and its direction after impact is equally inclined to the line of impact. If the coefficient of restitution is 0.5, the velocity of the ball after impact will be
  1.    0.5 m/sec
  2.    1.5 m/sec
  3.    2.5 m/sec
  4.    3.5 m/sec
Answer: Option C

Question 3. The maximum frictional force which comes into play, when a body just begins to slide over the surface of a another body, is known
  1.    Sliding friction
  2.    Rolling friction
  3.    Limiting friction
  4.    None of these
Answer: Option C