论文部分内容阅读
步入21世纪的新新人类依然无法改变车辆在公路上行驶仰仗摩擦力的事实,可以认为是摩擦力提供了车辆反作用动力,我们也同样知道当物体不受摩擦力或受到的摩擦力
The new humans entering the 21st century still can not change the fact that the vehicle drives on the road to rely on friction. It can be considered that the friction provides the reaction force of the vehicle, and we also know that when an object is not subjected to friction or friction