We can see the body is moving in a straight line with a linear velocity 10 m/s. After 4 second it is 50 m away from the observer. And assume it to continue to move straight.
Also by the relation v=rω when there is linear velocity there has to be angular velocity.
Now where exactly the angular velocity is taking place . The radius is changing every time so how does exactly the angular velocity comes in picture. I am not getting the picture that how does the angular velocity will look like or takes place. Thank you .