The displacement of an object in moving around a complete circle is _.
Correct answer: D. Zero
- A. 2πr
- B. 2r
- C. πr
- D. Zero
Explanation
The net displacement of an object moving in a circle, when it completes a cycle, is zero. Hence, Option D is correct.
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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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