The change of motion is proportional to the applied force and takes place in the direction of the s
问题描述：
The change of motion is proportional to the applied force and takes place in the direction of the s
能不能帮我说说其中的重要结构什么的,或者直接翻译也好,关键还是前者
The change of motion is proportional to the applied force and takes place in the direction of the straight line along which that force acts
完整句子以上
答
The change of motion （主语） 运动的改变
分句1：
is proportional to （谓语1）与...成比例
the applied force （宾语1）（谓语...的内容）作用力
and （and 前后分句1,2并列）
分句2：
takes place in（谓语2）发生
the direction [of the straight line along which that force acts]（状语2）（方括号内修饰direction）延着力的直线方向
----------------------
整句：
运动的改变与力（的大小）成比例并且延着力的直线方向发生.