1. Notes: Projectile Motion
projectile- any object launched, thrown or shot through the air under the force of gravity. (neglecting air resistance)
trajectory – path followed by projectile
shape is a parabola
parabolic curve- where every point is the same distance from the focus as it is from the directrix.

2. Projectile Examples http://www.mathsisfun.com/games/tanks.html
Other videos

3. Projectile Examples
Is a frisbee a projectile? An airplane? A rocket?

4. Parabola

5. Projectile Trajectory
Vy = decreasing
Vy = 0
-Vy = increasing
Vx = constant

6. Range – max Dx traveled by projectile
Height – Dy at given time
Max height of projectile, Vy = 0

7. X-motion and Y-motion are independent
Trajectory of object can be resolved into components to find two independent velocities
Ax = Acosq = Vx
Ay = Asinq = Vy
***Strategy – both horizontal motion and vertical motion are connected by the variable time (Dt) at the same point on a trajectory. Solving forD t in one dimension gives Dt in the other dimension.