Question

94
If a particle moves in a circle describing equal angles in equal times, its velocity vector
1) Remains constant
2) Changes in magnitude
3) Changes in direction
4) Changes both in magnitude and direction

Answer 1

Answer:

3) Changes in direction

Over here it's quite clear that the particle is traveling in uniform velocity . Hence their is no chamge in magnitude. But since it's moving in a circle it's direction keeps changing at each and every point on the cirlce. Since velocity is a vector quantity it depends on both size and magnitude. The magnitude is same(uniform velocity) but the direction keeps on changing(cause the path is circular)

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Answer 2

ANSWER:

3) Changes in direction