Which principle was a part of aristotle's explanation of motion that galileo corrected?

the earth is flat

net force is equal to mass times acceleration

jupiter has moons

heavier objects fall faster than lighter ones

Heavier objects fall faster than lighter ones

Explanation:

Galileo's leaning tower of Pisa experiment is famously known, where in he dropped two objects having different mass and both reached ground at the same time. He demonstrated that it does not depend on the mass of the object. All the object fall under equal acceleration due to gravity and thus, reach at the same time. Galileo corrected Aristotle's explanation of motion that heavier objects fall faster than lighter ones.

when it gains or loses electrons

the part of the wave he is travelling on is the crest