利用公式及变形推导式进行有关的计算，是《简单的运动》这一章的重点内容．在实际中，许多初学者由于对公式中各物理量的含义理解不透彻，计算时常出现错解，主要表现在：一、路程与实际长度混淆例二一到JO米长的火车，以五8千米／时的速度通过郑利z村河入铁桥，历日寸11分V） The use of formulae and deformation derivation to carry out the relevant calculations is the focus of the chapter “Simple Exercise.” In practice, many beginners do not fully understand the meaning of each physical quantity in the formula, and calculations often lead to misunderstandings. The main manifestations are: First, the distance is confused with the actual length. Example II. A train to the JO meter length, with 58,000 The speed of meters/hour passes Zheng Li z Village River into the Iron Bridge, which is 11 cents in calendar days.