If the velocity-time graph gives a parabolic curve then body posses______?
Correct answer: A. Variable acceleration
- A. Variable acceleration
- B. Constant acceleration
- C. Zero acceleration
- D. All of these
Explanation
Acceleration is the slope of a velocity-time graph. A parabolic curve has a changing slope, so the acceleration varies with time; the likely mistake is choosing constant acceleration, which produces a straight-line velocity-time graph.
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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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