Track a Tank Shell With a Mirror and Polar Coordinates
It’s possible to use the position to calculate the angle to aim the mirror—but that’s not as much fun as using polar coordinates. Rhett Allain
Describing the velocity in polar coordinates isn’t just in one dimension and those values aren’t constant. With these values, I can use the differential equations to find the polar velocity and position after some short time interval.
Source: www.wired.com