22 terms

# Physics Vocabulary Words

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motion
the state in which one objects distance from another is changing.
reference point
a place of object used for comparison to determine if something is in motion
speed
the distance an object travels per unit of time
velocity
a speed in any direction
acceleration
the rate in which the the velocity changes
force
push or pull on an object
balanced force
equal force acting on a object in different directions.
unbalanced force
forces that produce a nonzero net force
net force
the overall force an an object
friction
the force between two rubbing surfaces
gravity
the force that pulls objects towards each other
free fall
when the only force acting on an object is gravity
terminal velocity
the maximum speed possible while free falling
inertia : Newton's first law of motion
an object in motion stays in motion
Newton's second law of motion
The acceleration of an object depends on the mass of the object and the amount of force applied
momentum
the product of a body's mass and its velocity
Newton's Third law
for every action there is an equal and opposite reaction
Centripetal Force
a force that causes an object to move in a cycle
energy
(physics) the capacity of a physical system to do work
kinetic energy
the mechanical energy that a body has by virtue of its motion
potential energy
the mechanical energy that a body has by virtue of its position
Law of Conservation of energy
the law that states that energy cannot be created or destroyed but can be changed from one form to another