英语翻译A frictionless inclined plane of length 20m has a maximum vertical height of 5m.If an object of mass 2kg is placed on the plane,which of the following best approximates the net force it feels?
问题描述:
英语翻译
A frictionless inclined plane of length 20m has a maximum vertical height of 5m.If an object of mass 2kg is placed on the plane,which of the following best approximates the net force it feels?
答