Change the laws of physics
The force of gravity is a universal force which acts on all particles
with mass. The larger the mass of an object the greater the force it
applies to other bodies. The force of gravity is also dependent on
the distance between the two objects. In the case where an object is
on the surface of a planet the distance is taken as the radius of the
planet, this leads to a constant acceleration due to gravity. On
earth this is 9.81 m/s/s. In this simulation the can change the
direction as well as the magnitude of the gravitational acceleration.
The interaction between the balls and the walls are known as
collisions. An ideal collision is known as an elastic collision and
during this process the ball will maintain all of it's energy. In
terms of bouncing on the floor this means that a ball will bounce back
to the same heigh over and over again without getting lower. This is
not realistic to the natural world. A more realistic scenario is a
collision where energy is lost, this is known as an inelastic
collision. In these cases energy is lost to the generation of heat
in the ball and sound production. Some examples of bouncing with
different elasticities are shown below. The variable which controls
the elasticity of a collision is called the coefficient of restitution
(COR).
