Aroller coaster track is 3,000 meters long. it takes 100 seconds to travel once around the roller coaster. is the velocity constant throughout the trip? explain.

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

Place me with this question is my last question

Aprisoner is forced to go into one of three rooms, but he can choose which room. the first room is ablaze with fire. the second one is rigged with explosives that will go off as soon as he enters. the third contains a pair of lions who haven't eaten in years. which room should he choose to survive?