When you ride a roller coaster what makes your body rise out of its seat at the top of a hill

Asap! how does the distance between two objects affect the force of gravity? how is the moon dependent on the sun?

Consider the last statement in the prompt: "people take such environmental factors into account in their choices when deciding where to live." do all people have a choice as to where they live? what factor plays a key role in this decision and may therefore play a large role in determining quality of life?

Plz ! ive been stuck on this forever