Ayan warms some hot chocolate in a microwave oven. Which reasoning explains how the particles that make up the hot chocolate different as the temperature increases?

They move slower.

They have less energy.

They move farther apart.

They are arranged in a pattern.

A14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.