"Benyue" Air Paddle Electric Car Model Fun Science Experiment Toy Material Set Technology Small Production “奔月号”空气桨电动车模 趣味科学实验玩具材料套装 科技小制作

Product Name: KX1903 "Moon-Running" Air-Paddle Electric Vehicle
Model Number: KX1903
Size: 125*75*145 mm
Weight: Approximately 110g
Material: plastic components + transparent box + EVA + wheels + axles + eyes + motor assembly + double-sided tape + screws....
Packaging: pcs
Box dimensions: mm

In ancient times, people invented two-wheeled vehicles pulled by horses (or cows, donkeys). This can be confirmed by the discovery of Terracotta Warriors and many ancient mural paintings. A "xuan" was an ancient type of vehicle with a high front canopy and a canopy for passengers, used by officials above the rank of doctors. A "d" was an ancient type of military chariot with four wheels, covered with live cowhide on top and capable of carrying ten people below. It was primarily used for transporting soil to fill trenches, with attacking cities being its main purpose. A "d" cart was an ancient type of sedan chair; it is said that Emperor Qin Shi Huang was transported back to the palace using a d cart when he died outside. A "shenche" was an ancient large vehicle with a canopy, which could carry goods or serve as a sedan chair. In summary, the ancients were very intelligent and invented numerous types of vehicles. Moreover, these "vehicles" often symbolized the status and position of nobles and wealthy individuals. However, most of these vehicles were pulled by animals. Today, we ride a small vehicle that moves using wind power.

1. Principle note, "interaction force": An interaction force occurs whenever one object exerts a force on another object; the object under force will, in turn, exert a force on the source object. These two forces are referred to as action and reaction forces. A pair of interaction forces must be generated and eliminated simultaneously.

2. Understand the working principle of the “wind cart”: The force between two objects is always mutual. The applied force and the reaction force are always equal in magnitude and opposite in direction, acting along a straight line. When a person pushes against a wall, this force is the applied force, and the wall also exerts a reaction force of the same magnitude. The wind cart utilizes this principle to move forward!