c******n
发帖数: 16666 | | h*********3
发帖数: 1 | 2 好像不是
"A normal passenger vehicle such as a car or small pickup truck will
normally take approximately 316 feet to come to a complete stop after
recognizing the need to stop. In comparison, a semi truck takes about 525
feet before it comes to a complete stop after recognizing the need to stop."
http://www.hg.org/legal-articles/stopping-distances-for-commercial-vehicles-28265
"A passenger vehicle weighing 4,000 pounds, traveling under ideal conditions
at a speed of 65 miles per hour would take 316 feet to stop (nearly the
length of a football field). In comparison, a fully loaded tractor-trailer
weighing 80,000 pounds traveling under ideal conditions at a speed of 65
miles per hour will take 525 feet to stop (almost the length of two football
fields)."
http://www.udot.utah.gov/trucksmart/motorist-home/stopping-distances/
【在 c******n 的大作中提到】
: 好奇
| m********n
发帖数: 3812 | 3 如果在不超速不超载的情况下，相同方向相同速度行驶18和小轿车，大货前端跟小车末
端轻接触。然后同时地板刹。
这刹车距离跟大货自己刹的距离比，怎么样求解？ | b********6
发帖数: 35437 | 4 大货的轮胎会打滑，如果要4000磅的小车和80000磅的大车达到相同的加速度，大车的
轮子产生的摩擦力要是小车的20倍。刹车片的卡钳是液压的，可以压死，但是轮胎和地
面没有这么大的摩擦。大货车出于经济考虑，会更倾向于选择省油耐久的硬胎。小车则
可以选择摩擦力更大的性能胎。 | c******n
发帖数: 16666 | 5 嗯 之前看过几个volvo大卡车刹车的视频
刚才仔细看了下 感觉这个视频里的车应该没装东西 连trailer都是蒙皮而不是金属壳
子的
https://www.youtube.com/watch?v=ridS396W2BY
主要是觉得卡钳会更猛 而且这么多轮子呢
另外这次回国 高速排队时候瞄了几眼 不少大卡车中间轮子花纹都磨没了 还在用 |
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