Question

If a particle moves in a circle describing equal angles in equal times, its velocity vector

• A. Remains constant
• B. Changes in magnitude
• C. Changes in direction
• D. Changes both in magnitude and direction

Answer 1

Answer: (C)

Changes in direction

Answer 2

In uniform circular motion velocity vector changes in direction but its magnitude always remains constant.

$|\overset{\rightarrow}{v_{1}}| = |\overset{\rightarrow}{v_{2}}| = |\overset{\rightarrow}{v_{3}}| = |\overset{\rightarrow}{v_{4}}|$= constant