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汽车是人们经常乘坐的交通工具之一,可你是否知道,汽车与物理知识密切相关。1.汽车具有惯性乘汽车时都有这样的经历:汽车突然启动时,乘客会向后仰;而紧急刹车时,人要向前倾;汽车转弯时,车上人的身体会朝相反方向倾倒。这是为什么呢?汽车启动时,乘客的脚随车一起运动,而乘客的上半身由于惯性的原因继续保持静止状态而向后仰。当汽车突然刹车时,汽车和乘客的脚同时受阻力的作用而停止运动,而乘客的上半身由于惯性的原因继续保持向前的运动状态而向前倾倒。汽车转弯时,乘客的脚随车一起运动,而上半身由于惯性的原因继续保持原来的运动状态而向汽车转弯的相反方向倾倒。
Cars are one of the means of transport that people often take, but do you know that cars are closely related to physical knowledge? 1. Cars have the inertia of the car has such an experience: when the car suddenly starts, the passenger will recline; and emergency braking, people want to lean forward; car corner, the car’s body will dump in the opposite direction . Why is this? When the car starts, the passenger’s foot moves with the car, while the passenger’s upper body due to inertial reasons continue to stand still and backwards. When the car suddenly brakes, the car and the passenger’s foot stop by the same time the role of resistance, while the passenger’s upper body due to inertia continue to maintain the forward movement state and dumping forward. When the car turns, the passenger’s foot moves along with the car, and the upper body due to inertia continues to maintain the original state of movement and turn the car in the opposite direction dumping.