When the average velocity of a moving body is equal to its instantaneous velocity, then it is moving with
Correct answer: A. Uniform velocity
- A. Uniform velocity
- B. Uniform acceleration
- C. Variable velocity
- D. Variable acceleration
Explanation
The correct answer is uniform velocity. When an object moves with uniform velocity, it maintains a constant speed and travels in a straight line, which means its instantaneous velocity at any given time equals its average velocity over any interval. In contrast, uniform acceleration involves a constant change in velocity, making the instantaneous velocity variable and unlikely to equal the average velocity. Variable velocity indicates changes in speed or direction, leading to discrepancies between average and instantaneous velocities. Similarly, variable acceleration causes inconsistent changes in velocity, resulting in further differences between the two measures.
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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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