This animation demonstrates collisions.
The first slider is used to set the coefficient of restitution.
The second slider is used to set the ratio of the mass of the red car to the blue car.
The initial velocity of the blue car is pre-set to be 10 meters per second in the negative 1-direction.
The initial velocity of the red car is pre-set to be 3 meters per second in the negative 1-direction.
When pressed, the Start button commences the motion.
The Reset button returns all values to the initial pre-sets.