Through a cartoon movie, Beakman explains why your stomach feels weird on a roller coaster and why the biggest hill is the first one. He hangs a bowling ball from the ceiling with a cable and then swings the ball to squish a watermelon (energy in and energy out). He then puts himself where the watermelon was and shows that the ball can't swing any farther than the point at which he lets go. Beakman goes on to explain that centripetal force prevents us from falling out of the roller coaster and demonstrates it. He uses a tray containing a glass of milk and a cupcake and quickly spins it around to show that nothing falls off. He then explains why inertia keeps us from falling to the ground and brings all of the concepts together.

Sam makes a daredevil move and skateboards down the California Incline. As much as he enjoys the ride, he has trouble stopping his skateboard when he gets near the end of the Incline.

Phil conducts an experiment in which he makes a chain fly into the air due to the force of gravity. He explains how the experiment works and demonstrates it at a larger scale.

Lester tries to swirl a rope like a lasso but gets tangled up. He then goes on to create a lariat that creates inertia and causes the rope to swirl in a circle.

Spiderman and the lizard have a chaotic fight in which they both fly and fall all over the place. Eventually Spider-man manages to freeze the lizard's body, slowing him down, and giving Spiderman a chance to stop his plan.