How does the mass of an object affect the acceleration during free fall?
I tried for an hour to get my answer in here, but the web page isn’t working Here is another try: The acceleration of a falling object does not depend on the mass or the material of which the object is made, provided the object falls in a perfect vacuum. This is was actually assumed by Einstein, and forms the basis of his general theory of relativity-and is called the principle of equivalence of gravitational and inertial mass – the “equivalence principle” for short.
