HTML and CSS Reference
Applying the force
There are two ways to apply force in Box2D: ApplyForce and ApplyImpulse .
In Box2D, force is often consistently applied to a body for a while. For example, we speed up
a car by applying force. We use impulse, for instance, to apply a one-ime force. Throwing a
ball is more like an impulse than a constant force.
Explaining the construction of the physics world
The hoop is constructed using three staic bodies—a board and two squares, as illustrated in
the following figure:
In the real world, when basketball players throw the ball, they spin the ball as shown in the
We make the ball spin by applying torque to it while the ball is thrown.