Transcript Free Fall

Free Fall
Definition
When an object is under the influence
of gravity
Going up
Coming down
Acceleration
Constant
Represented by the letter g.
9.8 m/s2
We will use 10 m/s2 for most purposes
Formulae
All constant acceleration formulae apply
(see formulae sheet).
Dropped means vi=0
We will assume that up is the positive
(+) direction and down is the negative
(-) direction.
Speed
of a
falling
object
QuickTime™ and a
TIFF (LZW) decompressor
are needed to see this picture.
Graph of velocity vs. time
QuickTime™ and a
TIFF (LZW) decompressor
are needed to see this picture.
Displacement
of a falling
object
QuickTime™ and a
TIFF (LZW) decompressor
are needed to see this picture.
Graph of Displacement vs.
time
Common Misconception
 Which will hit the
ground first an
elephant or a mouse?
 The acceleration of an
object is directly
proportional to force
and inversely
proportional to mass.
Famous example
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decompressor
are needed to see this picture.