gc textbook chapter 7 Linear Momentum (id: d60827377)

本题目来源于试卷: gc textbook chapter 7 Linear Momentum，类别为 通用国际物理

[填空题]
A 3800-kg open railroad car coasts alond3)k.nrhwcy, nk )0acg)f egv,i0w2i g with a constant speed 6ppe.rxvlb z zi5(8f ;of 8.6m/s on a level track. Snow begins to fall vertically and fills thep;( pvf5zbl i 8r.ez6x car at a rate of 3.5kg/min Ignoring friction with the tracks, what is the speed of the car after 90.0 min?$\approx$    m/s

参考答案: 7.9±2%


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