A 2 kilogram rock is a the edge of a cliff 20 meters above a lake. The rock becomes loose and falls toward the water below. What is the potential energy of the rock at the top? What is the kinetic energy at the top?

What is the potential enery of the rock half way down?

What is the kinetic energy of the rock half way down if the velocity at that point is 14 m/s?

PLEASE HELP AM GIVING 20 POINTS A worker in a factory has discovered a material that is confusing. It can be stored in a container but can also flow from one container to another. It forms powder after some time. The worker is confused and does not know which state of matter it belongs. As a student of Physics, prepare a message that will help the worker in the factory to properly classify the substance in the right state of

Explanation:

Isolationists thought aid would bring us into war; interventionists thought aid would keep us out of the war.