Unit 1: Motion

scalar

A quantity that has only magnitude ex. speed, distance, time

vector

a quantity that has both magnitude and direction ex. displacement, velocity, acceleration, force

event

something that happens at a given position and time

standard unit of time

second

disance

the amount of space seperating two positions (d)

displacement

Distance and direction of an object's change in position from the starting point. (d with an arrow above it)

speed

the rate at which an object's distance is changing (v)

velocity

the rate of change of position or displacement

uniform motion

an object that has a constant velocity

acceleration

rate of change of velocity (non-uniform motion)

acceleration-time graph example

projectile motion

the object flies through the air with a two dimensional trajectory (both horizontal and vertical)