Question

Galileo’s famous experiment at the leaning tower of Pisa demonstrated that
(a) what goes up must come down
(b) all objects fall to earth at the same rate, regardless of their mass
(c) heavier object falls faster than lighter object of the same size
(d) gravity does not act on a falling object

Answer 1

(b) all objects fall to earth at the same rate, regardless of their mass

Galileo's experiment showed that, neglecting air resistance, objects of different masses fall with the same acceleration due to gravity, contradicting the idea that heavier objects fall faster.