A solid uniform
Figure P10.70
25.0 m/s
28.0 m
ball rolls without slipping up a hill (Fig. P10.70). At the top of the hill, it is moving horizon- tally, and then it goes over the vertical cliff. (a) How far from the foot of the cliff does the ball land, and how fast is it moving just before it lands? (b) Notice that when the balls lands, it has a greater translational speed than when it was at the bottom of the hill. Does this mean that the ball somehow gained energy? Explain