1. What is Motion
A change in the objects position based on a reference point

2. Motion can be described using SPEED
The amount of time it takes for an object to move a particular distance
The equation is distance / time
How have you seen speed
measured?

3. Units used for speed Miles per hour…..mph Meters per seconds…..m/s
The units for speed are always represented by a unit of length divided by a unit for time.

4. Motion can also be described using VELOCITY
Velocity is also the measure of distance in a given time, but
ALWAYS CONTAINS A DIRECTION
50 MPH to the right
4 M/S to the left

5. So…..what is the difference between speed and velocity?
Direction
Cardinal directions (N, S, E, or W)
Positive (+) or Negative (-) signs

6. Speed Is scalar What is a scale? A standard measurement
So scalar is a measurement that includes a number and a unit
Magnitude is term we use to identify the number which represents a size

7. Velocity Is vector What is a vector? A measurement that includes
Magnitude (a number)
Units
Direction

8. Numbers in Science
All numbers that we use in science represent information….
A distance (cm, m, in, ft)
An amount of time (s, min, hr)
A rate (mph, m/s, m/s2)
Because each number defines information all numbers must include a unit.