Two solid balls (one larger, the other small) and a cylinder roll down a hill. Which has the greatest speed at the bottom and which the least?
(a) the larger ball has the greatest, the small ball has the least.
(b) the small ball has the greatest, the larger ball has the least.
(c) the cylinder has the greatest, the small ball has the least.
(d) both balls have the same greater speed, the cylinder has the least.