Sir Isaac Newton ponders why the planets orbit the sun and what allows them to maintain that orbit. Very soon after he sits down under an apple tree, Humphrey bangs his head against one of the limbs, causing an apple to fall on Newton's head. It is at this moment that Isaac Newton has an epiphany and starts to develop the concept of gravity.
A fight breaks out, and Isaac Newton watches the quarrel and draws conclusions about forces based on his observations. Each boy is considered a mass, and each of their pushes is a force. At the end of the scuffle, Newton labels his conclusions "The Laws of Motion." This clip is an excellent depiction of Newton's laws of motion in a real-world context.
Newton presents his findings on gravity to a group of scientists. Among the attendees are Sir Robert Hooke. During his explanation of the inverse-square law, Newton notices that Hooke appears to be stealing his work, so he abruptly ends his presentation.
Beakman sings a song about Isaac Newton and inertia and pretends to be Newton to explain his Laws of Motion. To demonstrate the Laws of Motion, Beakman does an experiment where he has eggs on cardboard tubes resting on a piece of cardboard over cups. He asks what would happen if the broom moves the cardboard. He hits the cardboard only, the tubes and cardboard are moved, and gravity pulls the eggs down into the cups.