1. Speed and Motion Chapter 1.1 (pages 16-25)

2. Motion An object has motion when the distance from another is changing. Depends on point of view. Use a reference point to describe an objects motion. Examples include a bike, dog running …. An object has motion when the distance from another is changing. Depends on point of view. Use a reference point to describe an objects motion. Examples include a bike, dog running ….

3. Speed Speed = Distance Time Speed is how far something travels in a given amount of time. Speed = Distance Time Speed is how far something travels in a given amount of time.

4. Average Speed Adding the distances and times and dividing by the number of trials. More accurate number. Adding the distances and times and dividing by the number of trials. More accurate number.

5. Velocity Speed in a given direction. 30 miles per hour North Similar to speed Speed in a given direction. 30 miles per hour North Similar to speed

6. Motion Graphs Increasing Speed - Up the right Decreasing Speed - downward angle No motion - flatline - resting period Increasing Speed - Up the right Decreasing Speed - downward angle No motion - flatline - resting period

7. WHEN IS AN OBJECT IN MOTION? When its direction and time change.

8. SPEED VS VELOCITY Velocity describes speed in a given direction Example: a storm is traveling at 25 km/h westward Velocity describes speed in a given direction Example: a storm is traveling at 25 km/h westward

9. Answers 3-4 3. Speed of plant growth 3.75 cm/hour 4a. 170 m/min 4b. There is a flat-line graph 4c. The slope of the line is less than in the first graph = 100 m/min 3. Speed of plant growth 3.75 cm/hour 4a. 170 m/min 4b. There is a flat-line graph 4c. The slope of the line is less than in the first graph = 100 m/min