23 terms

# Force & Motion

#### Terms in this set (...)

acceleration
the rate at which velocity changes over time
average speed
the total distance traveled divided by the time it takes to travel that distance
balanced force
when two forces that are acting on an object are equal, but in opposite directions. Forces cancel out.
constant speed
speed that does not change over time
electrical force
force of attraction or repulsion of charged particles
Force
a push or pull exerted on an object
friction
the force that one substance exerts on another when the two rub against each other
gravitational force
the force created by gravity
Gravity
the force of attraction between all masses in the universe
horizontal
parallel to level ground, line side to side
Kinetic Energy
the energy an object has due to its motion
linear
a straight line
Motion
the state in which one object's distance from another is changing
net force
the overall force acting on an object
nonlinear
not a straight line, curved
Potential Energy
energy stored due to an object's position or arrangement
reference point
place or object used for comparison to determine if something is in motion
slope
the ratio of the change in the y-coordinates (rise) to the corresponding change in the x-coordinates (run) as you move from one point to another along a line, rise or run (steepness)
speed
the distance the object travels in one unit of time
unbalanced force
when the net force changes an objects motion
velocity
the speed of an object in a particular direction
vertical
perpendicularly to the horizon, line up and down
inertia
tendency of an object to resist a change in motion unless acted upon by an external force