PHYSICS: Unit 1- Graphing Motions

for test

scalar

a quantity, such as temperature or distance, that is just a number without direction

vector

a quantity, such as position, that has both magnitude and direction

position

the distance and direction from the origin to an object

vector

is position scalar or vector

distance

the entire length of an object’s path, even if the object moves in many directions

scalar

is distance a scalar or a vector

displacement

a change in position having both magnitude and direction; is equal to the final position minus the initial position

vector

is displacement vector or scalar

speed

refers to how fast an object is moving

scalar

is speed scalar or vector

velocity

refers to the rate at which an object changes its position

vector

is velocity a scalar or vector

acceleration

the rate at which the velocity of an object changes

vector

is acceleration a scalar or vector

constant velocity

traveling at the same speed and going the same direction

instantaneous velocity

speed and direction at specific moments in time

y=mx+b

general equation for linear relationship graph

directly

how does y vary with x in a direct linear relationship

straight diagonal line

the graph shape of a direct linear relationship

y=mx²+b

general equation for direct quadratic relationship