一个物理题,和牛顿第一定律有关 原题是英文,请牛人回答.请尽量用英文回答.

题目

一个物理题,和牛顿第一定律有关 原题是英文,请牛人回答.请尽量用英文回答.
Unrestrained objects in cars present significant risk as vehicle comes to rest suddenly in an emergency situation.State what happens to an object before and during the braking process and provide an explanation using Newton’s Law(s) of motion and any other relevant concepts.

答案

Objects to maintain uniform motion,by a combined force of 0,by Newton's second law of acceleration for 0; braking process,the objects are the reverse of the power,speed continues to decrease until 0 or collision.