In Newton's first law of motion which quantity remains constant:
Correct answer: A. Velocity
- A. Velocity
- B. Angular displacement
- C. Amplitude
- D. Amount of work
Explanation
Newton's first law of motion states that a body at rest tends to remain at rest, and a body in motion tends to remain in motion at a constant velocity unless an external force acts on it. Diagram:
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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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