A girl on a runs down a hill 400 meters. Then the girl runs up the hill 50 meters and falls down. The entire trip lasted 50 seconds. What is the average velocity of the girl? SHOW your work including equation used, work and answer with units.

Which instrument is used to measure air temperature

Will give brainliest! which statement best describes the difference between strong nuclear forces and weak nuclear forces? weak nuclear forces are involved when certain types of atoms break down. strong nuclear forces are responsible for holding atoms' nucleus together. weak nuclear forces hold bonds between atoms together. strong nuclear forces hold together the nucleus of an atom. strong nuclear bonds prevent atoms from falling apart. weak nuclear bonds prevent compounds from falling apart. strong nuclear forces are involved in breaking electrons from their shells. weak nuclear forces hold protons in the nucleus.

Explain earth's motion, using the terms "precession" and "rotation" in your answer.