火柴人 VS 物理

**Animation vs. Physics** is the ninth installment of the Animation vs. series and second installment of the Animation vs. Education series.

## Plot

### Classical physics

Directly after Animation vs. Math, the animation starts with The Second Coming floating in space, then falls down to a white floor. The Second Coming walks and a distance line appears on the bottom, indicating how many meters he has walked, immediately after that a velocity vector appears on the top, calculating his velocity in m/s. The Second Coming tap a few taps on the distance line, then a displacement line appears, shows how much or progress meters he has walked.

The Second coming eventually walks into a "slippery floor" due to friction. He then receives help from what seems to be a star in the night sky in the form of ropes and balls. He grabs a rope and uses it to capture a ball. He makes the ball and rope into a lasso and uses linear momentum to propel himself forward. He is able to glide effortlessly until he sees a larger ball in front of him. He cannot stop his forward progress and he bumps into it.

The large ball rolls to the edge of a steep valley with a tree part-way down. A rope drops down on the other side of the valley. The Second Coming nudges the ball a bit and it rolls down the slope and up the other side, its energy just enough to reach the other side. He tries the same thing, using his lasso as a grappling hook, which he attaches to a branch of the tree. He slides down, but since he did not start from the top, his momentum and energy were not enough to reach the other side.

He reaches his rope and returns to his starting spot, where he gives himself a little extra push. This is enough to reach the other side, and he collects the rope, and sees a rocket floating above him. He ponders how to get there, but the rope and larger ball give him an idea. He loops the rope around the ball and slides down the slope, taking the ball with him. He gets back to the other side, climbs the tree, steps onto a branch and jumps on it like a diving board. He ties the rope around the branch and secures it tightly by pushing the ball a bit further away. He stands on it and gives it a hard shove. It pulls the branch down like a catapult and The Second Coming spins around it with a sort of centrifugal force. He builds speed and lets go, launching himself straight up into the air toward the rocket.

### Astrophysics

He gives the rocket a little kick, and it starts up, slowly accelerating. He finds a torch floating through the vacuum, and briefly investigates the behavior of light waves. The rocket eventually reaches another star system, and, finding himself attracted to a nearby planet, he diverts the vehicle's trajectory, traveling around the planet's orbit and turning away. This maneuver increases the velocity exponentially as he repeats it with the other two planets and with the star.

Next, he comes across a little magnet. He jumps to catch it, and uses it to pull himself back to the rocket. Spotting a line of giant magnet rings, he attaches the magnet to the rocket, with the south pole to the front. This attracts the rocket to the magnetic ring's north pole (which faces The Second Coming). The rocket accelerates as it passes through each ring, and eventually leaves the galaxy.

Approaching a quasar, The Second Coming travels to the center, through an accretion disk until he orbits a black hole. An apple is thrown at him from the black hole's singularity, where it falls back to. Seeing the shining object from earlier within the black hole, he nose-dives the rocket into this target. Inside, he lights his torch to find that the black hole's immense gravitation also affects light (this is shown with the caption "OUTSIDE PERSPECTIVE", showing the viewer's image of The Second Coming distorting as the stick figure approaches the event horizon). As he goes deeper and deeper, the gravitational pull elongates (spaghettifies) him. He catches the apple, but gradually reduces in size, traveling through the apple's cellular and molecular structure until he reaches the subatomic.

### Subatomic, string theory & time travel

The Second Coming falls through an atom's nucleus and the quarks that form a proton, shrinking below the worldsheet to a level outside time, where particles are formed by strings. There he discovers the origin of the help from before: it came from his future self. The future Second Coming invites the present Second Coming to watch their past self, dropping open and closed strings as ropes and weight balls, as well as the rocket, the other tools and the apple.

The future version rolls the world line as a Tipler cylinder, making their view of time go backwards, showing present Second Coming building the universe before the arrival of his past self. Future Second Coming then forwards to past Second Coming orbiting the black hole. Present Second Coming drops the apple, luring past Second Coming into the black hole. Future Second Coming takes the apple, drops it again, and points to past Second Coming falling through the worldsheet. He then takes the present Second Coming's cowboy hat and disappears.

## Characters

### Protagonists

* The Second Coming (present, future and past)

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