Animated simulation re-enacts Galileo's experiment of dropping objects off the Leaning Tower of Pisa.

Investigate the effect of gravity on objects of various mass during free fall. Predict what the position-time and velocity-time graphs will look like. Compare graphs for light and heavy objects.

Do heavier and lighter objects fall at the same rate? Galileo hypothesized that objects fall at the same rate regardless of their mass. Complete this module to find out if Galileo was right by comparing position-time and velocity-time...

This site from NASA compares free falling motion to falling with air resistance. Discusses Galileo's experiment. Explains why we believe all objects free fall with the same acceleration.

[Free Registration/Login Required] Learn about the relationship between position and velocity for a diver accelerating under the influence of gravity and air resistance. Measure velocity and position based on variables of the height of...