What is the Principle of Car Movement?
1 Answers
The principle of car movement is as follows: 1. Rolling resistance: Rolling resistance is mainly caused by the relative deformation between the tires and the ground due to the car's gravity. The magnitude of resistance is directly related to the car's total weight, tire structure and pressure, and the quality and grade of the road surface. 2. Air resistance: Air resistance is formed by the friction between the car's surface and the air during movement, as well as the pressure of the oncoming airflow at the front of the car and the vacuum created by the air vortex at the rear. The magnitude of resistance is related to the car's frontal projected area, streamline length, and driving speed. 3. Uphill resistance: Uphill resistance depends on the car's total weight and the slope of the road. The greater the car's total weight and road slope, the greater the uphill resistance, and vice versa. Downhill resistance is the opposite, becoming the driving force for the car. 4. Inertial resistance: Inertial resistance only occurs during the car's variable-speed movement. According to the principle of inertia, when the car accelerates, the inertial resistance is opposite to the direction of movement. When the car decelerates, the stored kinetic energy tries to maintain the original speed, causing the car to coast forward.
