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# Projectile Motion

Launching objects.
by

## Sean O'Connor

on 15 August 2014

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#### Transcript of Projectile Motion

Projectile Motion
Kinematics
Free Fall
a = g = -9.8 m/s/s
Motion in Two Dimensions
Horizontal Launch
Launch at an Angle
(Range)
Impact
No motion in the horizontal direction
Vf is just before impact
Vertically:
Dropped Vo = 0
Launched straight down Vo = negative
Break Vo into horizontal and vertical velocity components
Vertically a = - 9.8 m/s/s
Horizontally a = 0
(v is constant and = Vox)
At the Maximum height, V = 0 in the vertical direction
Time to travel vertically is the same as the time to travel horizontally
If the projectile launches and lands at the same height, the vertical change in position is zero.
The projectile spends half the time in the air going up and the other half going down
Horizontally V is constant so a = zero
Vertically:
Vo is zero
a = -9.8 m/s/s
is negative
Horizontal
Vertical
Horizontal
time in the vertical and horizontal direction are equal
Trajectory
Launched straight up: Vo is Positive
a = g = -9.8 m/s/s
At Maximum Height V is 0
No motion in the horizontal direction
Example
Example
Example
Example
Example
Example
Full transcript