Put these items in order, going from smallest (first) to largest (last): nucleus of a cell, nucleus of an atom, ribosome, a human cell

Nucleus of cell, ribosome, nucleus of an atom , human cell 

When the ball is rising up, it gains kinetic energy. when the ball reaches the very top, it will have all potential energy, until it falls back down and gains it kinetic energy. finally when you catch the ball or it falls back down, it would have gained its potential energy back.