24 terms

Vocabulary force and motion

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acceleration
any change in the velocity of an object
agent
what causes the object to change its motion
buoyancy
the apparent loss of weight of a body partly or completely immersed in a fluid
centripetal force
a force that is directed toward the center, and is required to keep an object moving in a circular path or orbit.
contact force
a force that visually touches an object, thereby causing the result
control
the constant group in an experiment that you compare the variables to
deceleration
slowing down, braking, or negative acceleration.
density
the mass of an object divided by its volume
dependent variable
the quantity in a lab that is plotted on the vertical axis of a graph; it depends on something else.
direction
which way the object moves
equilibrium
a situation in which the resultant force on an object is zero.
force
a push or pull on an object that can make the object move, change the motion, or change shape
friction
the force that resists sliding motion between two surfaces in contact
gravity
the force of attraction between objects
independent variable
the quantity plotted on the horizontal axis of the graph. This is the part of the lab that you can change.
inertia
the tendency of an object to remain at rest or to continue moving in a straight line.
momentum
mass times velocity
non-contact force
a force that you can't see touching an object, but you can see the results.
receiver
what gets the force
result
what happens because of force
speed
the distance a moving object covers in unit time, ex. mph.
vector
a quantity such as velocity or force, which must be specified by its size and directions.
velocity
the speed and direction of an object.
weight
the force of gravity on any object