What is the vertical and horizontal component of a vector?
Projectile Motion Projectile – an object moving through air affected by gravity Projectile – an object moving through air affected by gravity
Projectile Demos ► Shooter/ Dropper ► Monkey and Hunter
Projectile Motion Horizontal and vertical motion act independently Horizontal and vertical motion act independently
How fast is the ball thrown?
► Vertical ► d=.5at 2 ► 5 =.5(10)t 2 ► t= 1 second ► Horizontal ► v= d/t ► v= 20m/1s ► v= 20 m/s The ball is thrown at 20 m/s!
What angle should a ball be kicked to get the farthest? Upwardly-Moving Projectiles
Projectiles launched at the same speed but different angles.
Shot Put - 45º is not the ideal angle, why? You are already off the ground 1-2 meters.
45º is the ideal angle for high speed projectiles either. Why? 45º is the ideal angle for high speed projectiles either. Why? Air resistance must be considered.
Fast Moving Projectiles ► What would happen if you threw a ball so fast that the curvature of the earth came into play?
Fast Moving Projectiles ► Satellite- a projectile traveling fast enough to fall around the earth rather than into ► To stay in orbit around the earth, a satellite needs to travel at 8 km/s!
Due Next Week POTW 11s Bull’s eye lab 12s Rocket Lab 30s Motion Worksheet #1 31s Motion Worksheet #2 32s Motion Review Test will be next Thursday Feb 5 th ► ► Study the 1s, 2s, labs, and worksheets ► ► Use the back page of booklet under motion for note sheet for test.