when an object moves
motion
the place from which a wave starts
reference point
total measurement of how much you traveled
distance
distance from start to end point
displacement
how fast an object is
speed
speed and direction of an objects motion
velocity
the measure of how quickly an objects velocity changes
acceleration
a push or pull that one object exerts on another
force
a force that must be touching an object to move it
contact force
a force that does not have to be touching the object to move it
noncontact force
a contact force that resists sliding motion when two objects colide
friction
noncontact force that existing between all objects with mass
gravity
when both forces have equal newtons on both sides of the object
balanced force
when forces have unequal newtons on both sides of the object
unbalanced force
sum of all forces acting on an object
net force
the tendency of an object to resist change in its motion
inertia
an object in motion stays in motion unless a force acts upon it
first law
acceleration equals the net force exerted on the object divided by its mass
second law
when one object puts force on another the other object pushes back with an equal force
third law
when two objects exert forces on each other
force pair

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