The Applet on Page 2 shows projectile motion and satellite motion in the earth's gravitational field. The projectile's or satellite's initial position and velocity can be varied. The viewpoint can be changed from a point close to the earth's surface to a point far from the earth's surface. The gravitational force acting on the projectile or satellite is simulated.

Detailed information on how to use the applet is available from Applet Help on the applet's Help menu.