Question

in 1 sec ,a particle goes from point A to point B ,moving in a semicircle .The magnitude of average velocity is ?

Answer 1

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Velocity is a vector quantity, and average velocity can be defined as the displacement divided by the time. Consider coordinates for the center of circle to be (0,0), then coordinate for point A will be (0,1) and B will be (0,-1). Then

average velocity=displacement/time

=total displacement is 2m and time is 1 sec

average velocity=2 m/s

Answer 2

The average velocity is 2m/s.