Units Units Units
Equation Variables
Horizontal Motion
Vertical Motion
Vocabulary
100
seconds (s)
What is time?
100
t
What is time?
100
It's constant.
What is the horizontal velocity of any projectile?
100
This is another word for the vertical distance traveled by a projectile.
What is height?
100
This is the value for gravitational acceleration on Earth.
What is 9.8m/s^2?
200
meters (m)
What is distance?
200
x
What is horizontal distance or range?
200
This is what you get when you multiply initial horizontal velocity by the amount of time a projectile is in the air. (vxo*t)
What is range (or horizontal distance)?
200
This force causes the acceleration of a projectile.
What is gravity?
200
This is in the shape of a parabola.
What is a trajectory?
300
meters per second (m/s)
What is velocity?
300
y
What is vertical distance or height?
300

There are none of these at work on a projectile, which is why its horizontal velocity doesn't change.

Forces

i.e. Gravity

300
This is always zero for a horizontally-launched projectile.
What is initial vertical velocity?
300
This is an object upon which gravity is the only acting net force.
What is a projectile?
400
meters per second per second (m/s/s or m/s^2)
What is acceleration?
400

g

What is gravitational acceleration or 9.8m/s^2?

400

A car traveling at a speed of 50 m/s drives straight off of a cliff. If it takes 6 seconds for the car to hit the ground how can you increase the range?

Increase the height or increase the initial horizontal velocity 


extra answer: increase the angle

400
A ball tossed vertically upward rises, reaches its highest point, and then falls back to its starting point. This is always the direction of its acceleration.
What is downward?
400
This is the distance a projectile lands from its launch point.
What is range?
500
Newtons
What is force?
500

viy

What is initial vertical velocity?

500
A water balloon is launched horizontally at a height of 1.5 meters above the ground. Its launch speed is 30 m/s. The instant before the balloon hits the ground, its horizontal speed is this.
What is 30 m/s?
500

Pudge Rodriguez hits a pop fly that goes straight up. The ball leaves the bat with an initial speed of 20 m/s and takes 2 s to reach its maximum height. What is the total time it is in the air

4 seconds

500
In order to more easily understand the motion of a projectile, we break its motion down into these parts.
What are components?
M
e
n
u