Velocity Applet

This applet will display the acceleration and velocity vectors in real time as the puck moves (either manually or automatically) on the screen. The velocity calculations are based on the comparison of the positions of the puck on the current and the previous frames. The acceleration calculations are based on the comparison of the positions of the puck on the current and the two previous frames. Both velocity and acceleration are displayed on a ghost image of the puck on the previous frame - of course, that's because velocity and acceleration cannot be calculated and displayed until after the puck has moved to the next frame.