急用,,有10點(((已獲得補償摩擦軌道)))

應該會保持靜止或以勻速直線運動.
(根據牛頓運動第一定律)

The inclination of the track provides a wieght compoent that just balances the friction of the track. Thus a trolley that run on it would behave as if it is run on a smooth (i.e. frictionless) track.