Question

訪客

不太了解(b)的意思，是指它在哪撞到障礙物然後壓碎？1m是撞到後還走了1m的意思嗎？

3. A Ford Taurus is initially moving at 112 km/h. Find its acceleration and the time taken to
Stop given that: (a) it brakes to a stop im 64 m; (b) it crashes head-on into a barrier and
crumples by 1m. [Ans 40: a 三4和1158, 一.56 m/s2; (b) 6.4 x 1073 s, 484 m/s? ]