1 / 10

Projectile Motion

Projectile Motion. What is projectile motion?. Projectile motion is a form of two-dimensional motion in which a “projectile” is under the influence of gravity. There is motion in both the horizontal plane (x-axis) and the vertical plane (y-axis). What is a projectile?.

patrick-mullins
Download Presentation

Projectile Motion

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Projectile Motion

  2. What is projectile motion? • Projectile motion is a form of two-dimensional motion in which a “projectile” is under the influence of gravity. There is motion in both the horizontal plane (x-axis) and the vertical plane (y-axis).

  3. What is a projectile? • Projectiles are objects that are launched into the air. Ex. balls, arrows, long jumpers

  4. Projectile motion • The path in which a projectile travels is a parabolic curve (assuming there is no wind resistance).

  5. Projectiles vs. Free Falling Objects Projectiles fall at the same rate as free falling objects.

  6. Solving for projectile motion • Since projectiles travel in both the horizontal and vertical planes, we can solve for the X and Y components. We can use the one-dimensional motion equations to solve for variables involved in two-dimensional motion problems.

  7. Projectile Motion x-Motiony-motion Vavg =Δx/ΔtΔy = ½ (vi +vf) Δt g = (vf- vi) / Δt Δy = viΔt + ½ gΔt² vf² = vi² + 2gΔy The same equations we used in 1-D motion! The trick is to solve for “x” and “y” motion of 2-D moving objects independently!

  8. Projectile Motion • Two types of projectile motion situations: 1. Horizontally launched projectiles 2. Projectiles launched at an angle

  9. x Physics Book -y Horizontal Projectile Motion What am I going to do about book checks??? A VERY TALL BUILDING CRASH!!!

  10. √2(Δy)/g = Δt Δx Sample Problem The Royal Bridge in Colarado is 321 m above the Arkansas River. If you kick a rock horizontally off the bridge and it hits the water with a horizontal displacement of 45 m, what is the velocity at which the rock was kicked? Δy = ½(g)(Δt)² g = -9.81 m/s² 8.10 s = Δt Δx = (Vx,i)(Δt) Δy = -321 m Δx/Δt = Vx,i 5.56 m/s = Vx,i Δx = 45.0 m

More Related