Curated OER
Gravity Gets You Down
Students investigate the force of gravity and how it effects different objects that are put into acceleration when applied the experiment of free falling. They drop different objects that have a variety of masses and some that cause air...
PBS
Pbs Learning Media: Free Falling and Weightlessness
Discover the difference between free-falling and weightlessness in this interactive activity from the NOVA: "Stationed in the Stars" Web site.
Physics Classroom
The Physics Classroom: Elephant and Feather: Air Resistance
The concept of air resistance is discussed in terms of why a heavier object falls faster than a lighter object when both dropped from the same height. In this discussion and animation, an elephant and feather are used as examples.
Physics Classroom
The Physics Classroom: Free Fall and Air Resistance
This lesson in high school physics on Newton's Second Law of Motion provides a discussion of free fall and air resistance, and answers, "Why do objects which encounter air resistance ultimately reach a terminal velocity?" and "In...
Physics Classroom
The Physics Classroom: Elephant & Feather (Free Fall)
A demonstration involving an elephant and a feather and explanation of why all objects maintain the same acceleration in the state of free fall without any air resistance.
Physics Classroom
The Physics Classroom: Introduction to Free Fall
A lesson on free fall covers the fact that free-falling objects do not encounter air resistance and all free-falling objects (on Earth) accelerate downwards at a rate of approximately 10 m/s/s (to be exact, 9.8 m/s/s).