Free fall is the downward motion of objects under the influence of gravity alone. All objects in free fall accelerate at the same rate of 9.8 m/s2 regardless of mass. Experiments show that free-falling objects do not encounter air resistance and accelerate constantly at 9.8 m/s2. Applications of free fall include skydiving and parachuting.

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PRANAVATHIYANI.G
M.Sc BIOINFORMATICS
Centre for Bioinformatics, Pondicherry University
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Introduction
Definition
Experiments
Position & Velocity
Applications
Reference

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Introduction
Falling objects

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Free fall is the downward motion under the influence of
gravity.
In other words, when the only force acting on an object
is gravity, the object is said to be in free fall.
In a vacuum (no air) all objects in free fall accelerate at the
same rate, regardless of mass.

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Experiments

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There are two important motion characteristics that are true of free-
falling objects:
Free-falling objects do not encounter air resistance.
All free-falling objects (on Earth) accelerate downwards at a rate of
9.8 m/s/s.
Free fall & resistance
Time (s) Velocity (m/s)
0 0
1 - 9.8
2 - 19.6
3 - 29.4
4 - 39.2
5 - 49.0

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Applications
 Skydiving
 Parachute

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 http://www.physicsclassroom.com
 http://www.physicstutorials.org
 http://en.wikipedia.org/wiki/Free_fall
References

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