Newton's laws do not hold good for particles:
Correct answer: B. Move with velocity comparable to the speed of light
- A. At rest
- B. Move with velocity comparable to the speed of light
- C. Moving slowly
- D. High velocity
Explanation
Newton's laws of motion are foundational for understanding the behavior of objects at everyday speeds. However, they do not apply to particles moving at speeds approaching the speed of light, where relativistic effects become significant. In such cases, Einstein's theory of relativity provides the necessary framework. Options A, C, and D describe situations where Newton's laws are still applicable, making them incorrect.
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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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