A uniform sphere of radius r and mass m does a pure rolling motion along an inclined plane with a center of mass velocity V1 and an angular velocity ofw 1. < move, and the angle between the inclined plane and the horizontal plane is As shown in Figure, when it contacts with the horizontal plane Continue to do pure rolling motion after a short glide. < 1.What is the angular velocity of the sphere when it returns to pure rolling on the horizontal plane? 2.What is the velocity of the center of mass? < [Hint: please represent V1, w 1 and B @ V