The property of the moving object by virtue of which it exerts force on the object that tries to slop it is:
Correct answer: A. inertia of the body
- A. inertia of the body
- B. quantity of motion in the body
- C. Acceleration of body
- D. All of these
Explanation
Inertia means resistance to change. It is the property of the body by virtue of which it cannot change by itself its state of rest or of uniform motion unless an unbalanced external force acts on it. The quantity of motion is called momentum. Momentum and acceleration do not try to stop a body; they are only used to describe motion, so only option A is correct.
This question appeared on the ETEA MDCAT 2011 paper, which you can sit online with every answer explained.
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About Newton's Laws of Motion
Newton’s laws explain inertia, the relation between net force and acceleration, and action-reaction pairs. Questions involve free-body diagrams, balanced and unbalanced forces, F = ma, force as the rate of change of momentum, and identifying genuine third-law pairs, which act on different bodies.
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