This describes how fast something is going
Speed
Net Force
This type of Force is only found when a string, rope, or cable is involved
Tension
Identify the variable with the unit: km
distance
the amount of matter (or stuff) in an object
mass
This describes how fast an object is moving AND which direction it is traveling
Velocity
Balanced Forces have a Net Force of what?
Net Force = 0
This type of Force is actually an acceleration
Gravity
Identify the variable with the unit: m/s
speed
the force of an object due to gravity
Weight
An object is doing this if it
-Speeds up
-Slows down
-changes direction
Accelerating
Unbalanced Forces cause this
Acceleration
This type of Force is the reason why parachutes work so well.
Air Resistance
Identify the variable with the unit: m/s, North
velocity
9.8 m/s2
Gravity on Earth
This is the equation to calculate acceleration
Vf - Vi
t
Why do we use arrows to show forces?
Because forces have both size AND direction
This type of Force always opposes motion and is PARALLEL to the surface
Friction
Identify the variable with the unit: m/s/s
acceleration
Gravity
A car is initially at rest and speeds up for 10 seconds until it reaches a speed of 30 m/s. What is the car's acceleration?
3 m/s2
Calculate the net force: Gravity pulls you down with a force of 200 N while air resistance pushes on you with a force of 140 N.
60 N, down
This type of Force is always PERPENDICULAR to the surface
Normal
Identify the variable with the unit: kg*m/s2
Force (also known as Newtons)
What is Mr. Hopkins' weight if he has a mass of 90.8 kg?
890 N