Instantaneous and average velocities become equal when body___________________?
Correct answer: A. has zero acceleration
- A. has zero acceleration
- B. has uniform acceleration
- C. has variable acceleration
- D. moves in a circle
Explanation
With zero acceleration, velocity remains constant, so the instantaneous velocity has the same value throughout the motion as the average velocity. Uniform acceleration does not generally make them equal because velocity changes during the interval. Motion in a circle also usually involves changing velocity even if speed is constant.
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About Displacement and Velocity
Displacement is the directed change in position, while velocity is the rate of change of displacement and includes both magnitude and direction. The topic connects position-time and velocity-time graphs with average and instantaneous values, and distinguishes displacement from distance and velocity from speed.
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