Transcript Free Fall PPT

Free Fallllllllllllllllllll
What is Free Fall?
Are these both examples of free fall?
Free Fall
Crazy
What is Free Fall? (cont.)
 Free Fall = The ideal falling motion of a body in
which gravitational force is the only force effecting it.
 There are many variables which are important in free
fall. They are as followed:
Vi = initial velocity
Vf = final velocity
Di = initial distance
Df = final distance
a = acceleration
t = time
(acceleration due to gravity = -9.8 m/s2)
0s
1s
0m/s
Velocity vs. Time
-9.8m/s
2s
-19.6 m/s
3s
-29.4m/s
4s
-39.2m/s
What happens to the velocity
(vf ) of object after equal and
consecutive units of time (Δt)?
Answer…
The object gains speed at the
same rate (-9.8m/s2) in each
successive equal time
interval.
1
Displacement vs. Time
3
5
What happens to the displacement
(Δd) of an object in equal and
consecutive units of time (Δt)?
Answer…
7
More distance is covered in
each successive equal time
interval.
Important Free Fall Formulas
Vf = Vi + at
Δd = ½(Vi + Vf)t
Δd = Vit + 1/2at2
Vf2 = Vi2 + 2ad