Horizontally shot projectiles

2

If you drop a ball straight down and throw a ball sideways at the same time from the same height, which one will hit first or will they hit at the same time?

Projectiles

• A projectile is:

• Examples:

• Vx =

• Viy=

• Viy= __________ m/s

Vx

• The horizontal speed is ________________because we:

Viy

• a becomes ay since

• ay = __________

Equations

• Vx = • Δy =

Practice Problem

A cannon ball is shot off a cliff that is 9 m high. How far away from the base of a cliff will the cannon ball land if it is shot horizontally at 23 m/s? x y

Sketch G:

U:E:

Need time, 2 step problem…

Part 1- solve Δt Part 2- solve Δx

10

If you drop a ball straight down and throw a ball sideways at the same time from the same height, which one will hit first or will they hit at the same time?