##### BBER
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#### Complete list of Terms and Definitions for BBER

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 referenceâ€” 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