Identify what happens to the kinetic energy (KE) and gravitational potential energy (PE) of a rock as it falls. 1.KE and PE both increase.
2.KE and PE both decrease.
3.KE increases and PE decreases.
4.KE decreases and PE increases.

What happens to the velocity of the car when the upward pull of the cable is greater than the downward pull of gravity as the car rises toward the top?

Which branches of natural science include the study of an organism that lived 10 million years ago

Aphoton is absorbed by an electron that is in the n = 3 state of a hydrogen atom, causing the hydrogen atom to become ionized. very far away from the nucleus, the released electron has a velocity of 750,000 m/s. what was the wavelength of the absorbed photon?