作者shy723 (shy)
看板Chemistry
标题请问一个质均的问题...
时间Wed Mar 8 23:12:56 2006
A pallet of boxes weighing 10 tons is dropped from a lifted truck
from a height of 10 feet. The maximum velocity the pallet attains
before hitting the ground is 6ft/s .How much kinetic energy does
the pallet have in (ft)(lb(f)) at this velocity?
答案是 11200 (ft)(lb(f))
不过我是算12335 (ft)(lb(f))
不知道是不是答案错呢
谢谢~~~
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