JAMB Physics 2016 Question 35

Question 35

Newton's Laws and Momentum

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

  1. A.Reluctance to start moving once at rest and its reluctance to stop moving once it has begun to move
  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
Show the answer and explanation

Answer: A (Reluctance to start moving once at rest and 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 when at rest and resists being stopped when moving.