Unit 2c Projectile Motion Physics Worksheet Page 2
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29Projectile Motion
Projectile Motion is similar to 1-D Kinematic Motion.
Difference: Projectile Motion is 2-D (x and y motion)
Kinematic Motion is 1-D. (x or y motion)
y
y
1-D motion
2-D Motion
Disp. In y and x
x
x
The Kinematic equations we learned already, as shown below still apply.
2
A= ∆V
V= d
d
= Vi
t + ½ gt
These equations come from
y
y
2
2
t
t
d
=Vi
t + ½ at
d=Vit + ½ at
x
x
“They are components”
Vf
= Vi
+ at
x
x
Vf
= Vi
+ gt
y
y
2
2
Vf
= Vi
+ 2ad
x
x
2
2
Vf
= Vi
+ 2gd
y
y
General Sketch of Projectile Path
2
“Parabolic Path” sq. term y=x
V
=0m/s, V
is always constant
ytop
x
V
V
V
y
x
V
V
V
x
y
V
V
V
y
x
V
V
x
y
V
V
=20m/s
i
V
V
Θ
iy
fx
V
Ground
Ground
V
ix
fy
Vf
Line of Symmetry or Midpoint
Time up = time down
Range to midpoint = Range from midpoint to end point
Launch angle from the horizontal = Θ (theta)
2
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