Question

a particle is moving in a circular path of radius r. then what will be displacement atter half a circle
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Answer 1

Answer:

0 is the displacement

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Answer 2

Answer:

The answer will be 2r.

Explanation:

After the particle covers half path of the circle, the displacement can be easily calculated by measuring the distance between initial and final points. Displacement after half circle = AB=OA + OB Hence, the displacement after half circle is 2r.