(c) suppose instead that you don't know the initial speed v1, but you see that the sphere just barely makes it up onto the top of the bump after the collision. what was the translational speed of the center of mass of the sphere right before it hit the bump?

b) 10 minutes

girls stopped for 10 minutes.

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.