スケートボードはなぜ進む？／ How Do Skateboards Move Forward? *Audio in EN / DE / FR / PT / ES

DENJIRO: Have you ever ridden a skateboard or a caster board? So how do they move forward? Let me explain using this homemade caster board. This caster board has casters attached parallel to the board. Let's try riding it. In this case, the caster board moves backward as well, so it can't move forward. Then what will happen when the casters are attached diagonally? Now the caster board can move forward. By attaching the casters diagonally, the board can easily move forward, but it doesn't move backward as easily. As it can't move backward, you're able to push against the ground when you swing the board sideways, which changes the direction of the caster board. The board moves forward as a reaction to this. On the other hand, a skateboard has four wheels attached to one board. You're able to move forward by moving the board left and right. This is a basic skateboarding skill called "tic tac." By tilting the board, you're able to push against the ground. At the same time, you lift the front of the skateboard and change direction to move forward. I hope energy will bring you all happiness. Our magic word is "Happy Energy!"