Why Objects Fall at the Same Speed in a Vacuum

The Vacuum Effect – In a vacuum, there’s no air to slow objects down, so all fall equally fast.
Air Gets in the Way – On Earth, feathers drift slower than rocks because air resistance pushes back.
Gravity Plays Fair – Gravity pulls on all objects with the same acceleration—about 9.8 m/s² near Earth.
Mass Doesn’t Matter – Heavy or light, all objects accelerate the same way without air in the mix.
Galileo’s Insight – Legend says Galileo dropped balls from the Leaning Tower to prove this surprising truth.
Apollo 15 Demo – On the Moon, astronaut David Scott dropped a hammer and a feather—both hit the ground together.
Einstein’s Equivalence – This principle underlies relativity: mass and gravity interact the same for all objects.
Everyday Illusion – On Earth, we only think heavy objects fall faster because air slows lighter ones more.
Physics in Action – Drop a coin and feather in a vacuum tube, and they land at the same moment.
Universal Law – From labs to space, falling speed depends only on gravity, not weight or size.