If an object is moving with constant velocity of 20ms-1 towards north, then its acceleration will be:
Correct answer: D. 0 ms-2
- A. 5 ms-2
- B. 10 ms-2
- C. 9.8 ms-2
- D. 0 ms-2
Explanation
The correct answer is 0 ms-2. Acceleration is the rate of change of velocity. When an object moves with a constant velocity, its speed and direction remain unchanged, indicating no change in velocity and, consequently, zero acceleration. The other options imply a non-zero acceleration, which would mean the object's velocity is changing, contradicting the scenario of constant velocity.
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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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