（原文）A flatbed truck is carrying a heavy crate. The coefficient of static friction between the crate and the bed of the truck is 0.78. What is the maximum rate at which the driver can decelerate and still avoid having the crate slide against the cab?（中文）平板卡车装运一个重木箱，箱子和车之间的静摩擦力是0.78，此车最大减速率是多少的时候，木箱不会滑动？请给点详细的解释，谢谢了！
热心网友
f=ma a为减速率。f为摩擦力 f=umg u为摩擦系数。m 为质量。g为重力加速度。 根据这个算。求出a.
热心网友
没有木箱的质量 能解这个题吗？