What is gravitational potential energy? Select one:

Energy resulting from the repulsion between two charges

Energy resulting from the attraction between two charges

Energy resulting from the attraction between two masses

Energy resulting from the repulsion between two masses

During cooling, the kinetic energy of the molecules falls. why does this happen? a.the motion of the molecules increases. b. the motion of the molecules slows down. c.the van der waals forces between molecules decrease d. the forces of attraction between the molecules are overcome.