Which law of motion defines force?
Correct answer: B. 2nd law
- A. 1st law
- B. 2nd law
- C. 3rd law
- D. All of these
Explanation
Newton's second law provides the quantitative definition of force: F = ma, linking net force to the rate of change of momentum (or acceleration times mass).
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About Force and Motion
Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
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