Free-falling Bodies: Introduction

All objects, neglecting air resistance, fall with the same acceleration towards the Earth's center due to the force exerted by the Earth's gravity. This experimentally determined fact is unexpected because we are so accustomed to the effects of air resistance and friction that we expect light objects to fall slower than heavier ones. People beli...

When an object falls towards the ground and is only influenced by gravity, it is said to be in free-fall.

Consider a ball thrown upwards in the air, reaches a certain height before falling back due to Earth's gravitational force.

Here, the ball is undergoing changes in velocity during its fall, but the acceleration is constant.