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JAMB Physics 1984 Question 38

Question 38

Newton's Laws and Momentum

Which of the following is a correct explanation of the inertia of a body?

  1. A.Ability to overcome the earth's gravity
  2. B.Reluctance to stop moving
  3. C.Readiness to start moving
  4. D.Reluctance to start moving and its readiness to stop moving once it has begun to move
  5. E.Reluctance to start moving its reluctance to stop moving once it has begun to move.
Show the answer and explanation

Answer: E (Reluctance to start moving its reluctance to stop moving once it has begun to move.)

Explanation

Inertia is a body's tendency to keep its state: it resists being started and, once moving, resists being stopped.