[问答题]
Two inclines have thej j 0xs0yvh68o same height but make differenvc0y yvrapo,ll8 :;ywt: np64ea gg71t angles with the horizontal. The same steel ball is rolled down each incline. On which incline will the speed :cl,4y7rpy gev1pny;l68 w0ag o: vtaof the ball at the bottom be greater? Explain.