View
26
Download
1
Category
Tags:
Preview:
DESCRIPTION
Fire Away!!!. 1-2-3 Ground Launched Projectiles. What is a projectile?. A flying object with no means of propulsion after its launch. Can be launched with any VELOCITY and at ANY ANGLE May be subjected to AIR RESISTANCE. Initial velocity. What is the horizontal part of - PowerPoint PPT Presentation
Citation preview
Fire Away!!!1-2-3 Ground Launched Projectiles
What is a projectile?
• A flying object with no means of propulsion after its launch.
• Can be launched with any VELOCITY and at ANY ANGLE
• May be subjected to AIR RESISTANCE
Initial velocity
30°
What is the horizontal part ofthe soccer ball’s initial velocity?
vix = vi cos θ
What is the vertical part ofthe soccer ball’s initial velocity?
viy = vi sin θ
12 m/s6 m/s
10.4 m/s
What assumptions can we make?
Horizontal
• Initial velocity = vi cos θ
• Acceleration = 0
Vertical
• Initial velocity = vi sin θ
• Acceleration = -9.81 m/s2
• Vertical speed = 0 at top
Projectile Vector Diagram
t1/2 vfy = 0 (at top)
x y
a = 0 a = -9.81 m/s2
vi = vi cos θ vi = vi sin θ vf = 0 (at top)
ttot = 2t1/2
ttot
Recommended