public static void attract(Body body, Point point, double force)
{
// Calculate the effect of a force of attraction on a body.
// Update the motion of the body.
}
public static void collide(Body bodyA, Body bodyB)
{
// Calculate the effect of two, non-deforming spherical bodies, colliding.
// Update the motion of each body.
}
public static void accelerate(Body body, double velocity, double direction)
{
// Calculate the effect of the acceleration on the body.
// Update the motion of the body.
}
