Units
What unit is used to represent mass?
kilograms (kg)
What is the equation for weight?
w = m x g
This does not change regardless of the planet you are on
an object's mass
What is a quantity that has both a magnitude and a direction called?
A vector
Newton's 1st law discusses what?
inertia
What is the unit for distance?
meters
what is the equation for speed?
speed = distance / time
This changes depending on the planet you are on.
An object's weight
If a quantity only has magnitude it is referred to as...
scalar
In the 3rd law, each force must be part of a force pair. Those forces are equal and _____________.
opposite
what is the unit for weight?
Newtons (N)
Equation for Net Force
Net Force = Mass x Acceleration
What planet has the greatest gravitational pull?
the most massive one - Jupiter!
the Net Force
Newton's 2nd law says that acceleration is always in the direction of the
net force
What is the unit for speed?
m/s
What is the equation for acceleration?
acceleration = the change in velocity / the change in time
What is the magnitude of Earth's gravitational field?
9.8 m/s2 or N/kg
What force is the force pair for weight (counters weight)?
Normal Force
The force of ________________ always counters (or works against) the direction of motion
friction
what is the unit for gravity?
m/s2 or N/kg
What is the equation for displacement?
displacement = final position - initial position
This measurement is indirectly / inversely related to gravity when calculating weight.
distance
The picture that we draw when summarizing all of the forces acting on an object is called a...
Free Body Diagram
What do we call forces that result in zero sum and therefore no movement?
balanced