When velocity time graph is a straight line parallel to time axis then__________________?
Correct answer: C. acceleration is zero
- A. acceleration is const
- B. acceleration is variable
- C. acceleration is zero
- D. velocity is zero
Explanation
A velocity-time graph parallel to the time axis has zero slope, so Δv/Δt = 0 m/s^2 and the acceleration is zero. Option c is correct; option a is the likely trap because a horizontal line does represent constant velocity, but its constant acceleration is specifically zero.
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About Acceleration
Acceleration measures the rate at which velocity changes with time, including changes in speed, direction or both. Work includes average and instantaneous acceleration, the relation a = Δv/Δt, uniform acceleration equations, and interpreting velocity time and displacement time graphs, with acceleration carefully distinguished from velocity.
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