| Terms |
Definitions |
|
acceleration
|
net force /mass
|
|
"Weight Equals"
|
mass x acceleration due to gravity
|
|
Average speed,
|
the total distance traveled, d, divided by the time, t, it takes to travel that distance
|
|
linear graph,
|
the displayed data form straight-line parts. The slope of the line is the acceleration.
|
|
calculate acceleration
|
for straight-line motion by dividing the change in velocity by the total time
|
|
mass
|
the measure of the inertia of an object depends on the amount of matter an object contains
|
|
static friction
|
the friction force that acts on objects that are not moving
|
|
air resistance
|
fluid friction acting on an object moving through the air
|
|
terminal velocity
|
the constant velocity of a falling object when the force of air resistance equals the force of gravity
|
|
velocity
|
the speed and direction in which an object is moving
|
|
Vector addition
|
is the combining of vector magnitudes and directions
|
|
projectile motion
|
the motion of a falling object after it is given an initial forward velocity
|
|
momentum
|
the product of an objects mass and its velocity
|
|
rolling friction
|
a friction force that acts on rolling objects
|
|
weak nuclear force
|
an attraction force that only acts over a short range
|
|
free fall,
|
the movement of an object toward Earth solely because of gravity 9.8 m/s2
|
|
Instantaneous acceleration
|
is how fast a velocity is changing at a specific instant
|
|
balanced force
|
the net force is zero and there is no change in the objects motion
|
|
Instantaneous speed.
|
, v, is the rate at which an object is moving at a given moment in time
|
|
a frame of reference—
|
is a system of objects that are not moving with respect to one another
|
|
momentum formula
|
mass x velocity
|
|
centripetal force
|
a center directed force that continuously changes the direction of an object to make it move in a circe
|
|
Constant acceleration
|
is a steady change in velocity.
|
|
Displacement
|
is the direction from the starting point and the length of a straight line from the starting point to the ending point.
|
|
weight
|
the force of gravity acting on an object
|
|
gravity
|
the force that acts between any two masses
|
|
gravitational force
|
an attraction force that acts between any two masses
|
|
vector
|
is a quantity that has magnitude and direction
|
|
strong nuclear force
|
a powerful force of attraction that acts only on the neutons and protons in the nucleus, holding them together
|
|
net force
|
is the overall force acting on an object after all the forces are combined
|
|
sliding friction
|
a force that opposes the direction of motion of an object as it slides over a surface
|
|
nonlinear graph
|
, a curve connects the data points that are plotted
|
|
Speed
|
is the ratio of the distance an object moves to the amount of time the object moves
|
|
force
|
is a push or a pull that acts on an object.
|
|
resultant vector,
|
which is the vector sum of two or more vectors
|
