1st law of motion gives the definition of _________________________?
Correct answer: A. inertia
- A. inertia
- B. motion
- C. velocity
- D. force
Explanation
Newton's first law says that a body remains at rest or in uniform straight-line motion unless acted upon by an external unbalanced force. It therefore introduces and defines the idea of inertia, the tendency to resist changes in motion. Students may choose force, but force is not defined by the first law; its effect is quantified by the second law.
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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.
Practise Force and Motion
1,416 free Force and Motion MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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