[问答题]
A sphere and a cylinder ww,cejai0f9 2b36e8oihrd9t h(x ;b;ss efky7ave the same radius and the same mass. They start from rest at the top of an incline. Which reaches the bottom first? Which has the greater speed at the bottom? Which has the ;7b x(sy;fkesgreater total kinetic energy at the bottom? Which has the greater rotational KE?