1 Velocity A Equation B SI units are

1) Velocity A) Equation: B) SI units are m/s C) Positive displacement Negative displacement D) Both size and direction Positive velocity Negative velocity

1) Velocity E) Average Velocity = Velocity averaged for the entire time of travel F) Instantaneous Velocity = Velocity at a specific moment. Rate of change of displacement.

2) Speed A) Equation: B) SI units are still m/s C) Always positive D) Only size

2) Speed E) Average Speed = Speed averaged for the entire time of travel F) Instantaneous Speed = Speed at a specific moment. Rate of change of distance traveled.

Think about slope… 3) Position vs. Time Graphs Constant Velocity What is “rise over run” for a position/time graph? Changing Velocity

3) Position vs. Time Graphs High Speed, Positive Direction Low Speed, Positive Direction

3) Position vs. Time Graphs High Speed, Negative Direction Low Speed, Negative Direction

4. Example Problems speed = distance / time 1. If a person is walking 2 m/s, how many seconds will it take to walk 35 meters? 2. If a person is walking 2 m/s, how far can they walk in 20 minutes?

Look at the position time graph. What is the object doing for Part B of the graph? B

Look at the position time graph. What is the object doing for Part C of the graph? C

Look at the position time graph. When does the object have the greatest positive velocity? B A C D

HOMEWORK Worksheet – Graphing Motion