I seem to just not understand how relative velocities and accelerations work.
Here is a problem that I will use to ask my question:
When the box lands, its moving 3m/s to the right, and the belt is moving 1m/s to the right. Therefore, the velocity of the box is 4m/s from an absolute point of view at the instant it lands on the belt. From the view of the belt, the velocity is 3m/s. Is this right?
So to determine the time to bring the package to rest, can't I just ignore the belt and do my work with a "ground" and a box with a velocity of 3m/s?
I know that that's wrong, I don't know how to think about this problem. Need help!