Question

Quiz
A particle is moving on a circular path with
constant speed y. What is the change in its
velocity after it has described an angle of 60° ?​

Answer 1

Explanation:

velocity will remain constant at every point of circular motion due to conservation of angular momentum.

Answer 2

velocity = y ( remains same)

Explanation:

speed constant= y

speed change = 0

velocity is vector

By triangle law of vectors,

change in velocity= Y2-Y1

Y2-Y1= under root ( Y1square + Y2square - 2y1y2 cos 60 degree ) = under root ( 2Ysquare-2Ysquare 1 by 2)= Y

hope it helps.....