Start Virtual Physics and select Satellite Motion from the list of assignments. The lab will open in the Mechanics laboratory. The laboratory will be set up with a ball on the screen. The ball's mass is 100 kg. Attached to the ball is a plunger that you will use to launch the ball into motion. A radial gravitational field, which is the same as Earth's, has also been set up. You will hit the ball with the plunger and observe its motion as it is pulled by gravity towards Earth's surface. The goal is to hit the ball with the amount of force that will put it into orbit around the gravity center