A car is moving in a circular path with a uniform speed y. Find the magnitude of change in its velocity when the car rotates through an angle `theta`.

Explanation

Change in velocity `vec(Deltav)=vecv-vecu`
The magnitude of change in velocity
`Deltav=sqrt(v^(2)+u^(2)-2uvcostheta)`
As the speed is uniform `=|vecv|=|vecu|=v`
`:.Deltav=2vsin((theta)/(2))`.