1. © 2010 Pearson Education, Inc. Week 2 Day 2: Physics Motion Models - so far Slide 1-7 Particle Model General Motion Model Constant Velocity Model

2. © 2010 Pearson Education, Inc. How to describe motion Slide 1-7 Different ways to represent motion Describe the motion in words Position vs. Time Graphs Velocity vs. Time Graphs Motion Diagram Pictorial Diagram

3. © 2010 Pearson Education, Inc. Representations Slide 2-9 Motion diagram (student walking to school) Table of data Graph

4. © 2010 Pearson Education, Inc. Trials 1-6 Summary Slide 1-7 Constant velocity motion Straight line position vs. time graph Slope shows how fast you are moving Steeper Slope => faster speed Sign of Slope shows direction Velocity vs. Time Graph is flat straight line Faster => farther from time axis Above the time axis => motion in the positive direction Below the time axis => motion in the negative direction Spacing of Balloons is the same for equal time intervals Faster speed => distance between balloons increases

5. © 2010 Pearson Education, Inc. In each of the next four trials, you have to try to find a way to move such that you match the given representation and fill in the other two representations. (i.e. you are given a velocity vs. time graph and have to move to create the same velocity vs. time graph) Description of motion from Trial #7 Human Motion Demo Trial 7 Slide 1-7

6. © 2010 Pearson Education, Inc. In each of the next four trials, you have to try to find a way to move such that you match the given representation and fill in the other two representations. (i.e. you are given a velocity vs. time graph and have to move to create the same velocity vs. time graph) Description of motion from Trial #8 Human Motion Demo Trial 8 Slide 1-7

7. © 2010 Pearson Education, Inc. In each of the next four trials, you have to try to find a way to move such that you match the given representation and fill in the other two representations. (i.e. you are given a velocity vs. time graph and have to move to create the same velocity vs. time graph) Description of motion from Trial #9 Human Motion Demo - Trial 9 Slide 1-7

8. © 2010 Pearson Education, Inc. In each of the next four trials, you have to try to find a way to move such that you match the given representation and fill in the other two representations. (i.e. you are given a velocity vs. time graph and have to move to create the same velocity vs. time graph) Description of motion from Trial #10 Human Motion Demo - Trial 10 Slide 1-7

9. © 2010 Pearson Education, Inc. Two Ships Passing in the Night Slide 1-7 A.Describe the motion of the blue ship and the red ship. B.When does one pass the other? C.When are their velocities the same? D.Which is moving fastest at t = 25 minutes? E.Which is ahead at t = 25 minutes?