Problems with Aristotle's Ideas

Aristitle's ideas were accepted as the truth for hundreds of years. At a quick glance, his ideas seem to be common sense. For example, a rock dropped from an outstretched hand does fall in a straight line.

it seems logical that a heavy stone should fall faster than a much lighter block of wood. However, there are problems with aristotle's ideas.

Think about an archer who shoots a flaming arrow into the night sky.
The Curving path of the arrow's flight is shown in the illustration below. This curved path does not agree with Aristotle's belief that all motion on earth must be in a straight line.