作者dahuanews (大話新聞)
看板Physics
標題[問題] 車子煞車 幾秒停
時間Thu Oct 14 19:05:36 2010
A 1500 kg car is moving at 21 m/s when the brakes are applied. If the
coefficient of friction between the car and the road is 0.37, what time in s
does it take the car to stop?
a.5.8
b.6.2
c.6.4
d.6.6
e.6.8
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 120.101.34.119
1F：推 ToMoveJizz:a=ug ; t=v/a ; ans: a. 5.8s 10/14 20:22
2F：推 FISHYAN:可能 要考慮一下平均反應時間 10/16 00:38