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Notes: Projectile Motion. projectile- any object launched, thrown or shot through the air under the force of gravity. (neglecting air resistance) http://phet.colorado.edu/new/simulations/sims.php?sim=Projectile_Motion trajectory – path followed by projectile - PowerPoint PPT Presentation
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Notes: Projectile Motion
projectile- any object launched, thrown or shot through the air under the force of gravity. (neglecting air resistance)
http://phet.colorado.edu/new/simulations/sims.php?sim=Projectile_Motion
trajectory – path followed by projectile shape is a parabolaparabolic curve- where every point is the
same distance from the focus as it is from the directrix.
Projectile Examples
• http://www.mathsisfun.com/games/tanks.html
• http://www.youtube.com/watch?v=9niqSk9VCi8&feature=related
• Other videos
Projectile Examples
• Is a frisbee a projectile? An airplane? A rocket?
Parabola
http://www.richland.edu/james/lecture/m116/conics/paradef.html
Projectile TrajectoryVy = decreasing
Vy = 0
-Vy = increasing
Vx = constant
Range – max x traveled by projectile
Height – y at given time
Max height of projectile, Vy = 0
X-motion and Y-motion are independent
Trajectory of object can be resolved into components to find two independent velocities
Ax = Acos = Vx
Ay = Asin = Vy
***Strategy – both horizontal motion and vertical motion are connected by the variable time (t) at the same point on a trajectory. Solving for t in one dimension gives t in the other dimension.