So I have a a character, say a spaceship. It needs to move distance R, and in direction T (Theta). So say if The object is at (0,0), and it needs to get to (4,3), it has R = 5 and T = about 36 degrees.
Essentially I know where the endpoint is, and the distance away. I want my spaceship to start decelerating when R becomes 8, and the object come to a halt when it reaches the location.
How can I do this. (Kinematics in answers is welcome)