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velocity

The rate at which distance is changing with time.

vector measurement

measurement with magnitude or quantity and direciton

scalar measurement

measurement with only magnitude or quantity

point of origin

the beginning point on a line graph

positive acceleration

speeding up

negative acceleration

slowing down

deceleration

another word for negative acceleration; the antonym (opposite) of acceleration

constant speed

the speed did not change; there was NO acceleration

constant velocity

the velocity did not change; there was NO acceleration

m/s

unit of measurement for velocity

m/s 2

unit of measurement for acceleration

m or km

units of measurement for distance

acceleration

a=v¹= dx/dt

final

end, last

initial

beginning, first

meters per second squared

SI unit for acceleration

Speed

D / T

direction

a positive ________ or association means that, in general, as one variable increases, so does the other; when increases in one variable generally correspond to decreases in the other, the association is negative

net force

The *combination* of all forces acting on an object

friction

The force that opposes the motion of one surface as it moves across another surface

910 seconds

How long it takes for a fly traveling 9.1 m/s for 100 meters

kinetic friction

Friction that opposes motion once the motion has *already started*

remain at rest/not move

If the net force is *zero*, the the object will _________

11.25 m

How far can a car moving at 25m/s in 45 seconds?

helpful friction

Helps stops a car, lets you grip things, starts a fire,walk on a sidewalk; writing with pen on paprer

fundamental forces

gravity, electromagnetic, strong nuclear, weak nuclear

balanced force

*Equal forces* acting on one object in opposite directions resulting no motion

kinetic

Static friction is *greater than* ________ friction.

negative velocity

When speed is *decreasing* in a certain direction

Displacement

Fluid being pushed back out of the way by an object and talking its place.

slope

Acceleration can be determined from a *velocity* vs. *time* graph by calculating the line's _________

centripetal force

A force that causes an object to move in a circle