Projectile Motion Projectile motion is independent vertical and

Projectile Motion • Projectile motion is independent vertical and horizontal motion through the air only under the influence of gravity after a having an initial horizontal velocity. • Two dimensional motion is any movement of an object that occurs both horizontally and vertically • Projectile – an object with independent vertical and horizontal motion that moves through the air only under the influence of gravity after a having an initial horizontal velocity. • Trajectory – the path the projectile follows (what shape is it? ) • Like vectors, the horizontal and vertical velocities of a projectile are independent.

Projectile Motion Which bullet hits first?

Projectile Motion Projectile motion variables • Vx the velocity in the horizontal (x) direction • ∆dx the distance in the horizontal (x) direction • Vy ↓ the velocity in the vertical (y) direction • ∆dy ↓ the distance in the vertical (y) direction • t is still time • a(g) is still -9. 81 m/s 2 for vertical (gravity) • ∆dx = Vx(t) is the speed equation for horizontal motion • Fantastic four equations can also be used

Half Projectiles • Horizontal calculations: • ∆dx, Vx, and t • Using ∆dx = Vx(t) • Vertical calculations: • ∆dy, Vy, a, t • Using fantastic four

Projectile Motion What are the parts of projectile motion? 1. Vertical motion 2. Horizontal motion

Projectile Motion A stone is rolled horizontally at 15 m/s from the top of a 100 m cliff. a) How long does it take to reach the bottom? b) How far from the base of the cliff does it strike the ground c) Sketch the trajectory

Projectile Motion