Ch. 10 Motion

Ch. 10 Motion PowerPoint PPT Presentation


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Ch. 10 Motion

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1. Ch. 10 Motion I. Describing Motion Motion Speed & Velocity Acceleration

2. A. Motion Problem: Is your desk moving? We need a reference point... nonmoving point from which motion is measured

3. A. Motion Motion Change in position in relation to a reference point.

4. A. Motion Problem: You are a passenger in a car stopped at a stop sign. Out of the corner of your eye, you notice a tree on the side of the road begin to move forward. You have mistakenly set yourself as the reference point.

5. B. Speed & Velocity Speed rate of motion distance traveled per unit time

6. B. Speed & Velocity Instantaneous Speed speed at a given instant Average Speed

7. B. Speed & Velocity Problem: A storm is 10 km away and is moving at a speed of 60 km/h. Should you be worried?

8. B. Speed & Velocity Velocity speed in a given direction can change even when the speed is constant!

9. C. Acceleration Acceleration the rate of change of velocity change in speed or direction

10. C. Acceleration Positive acceleration “speeding up”

11. D. Calculations

12. D. Calculations

13. D. Calculations

14. D. Calculations

15. E. Graphing Motion slope = steeper slope = straight line = flat line =

16. E. Graphing Motion Who started out faster? A (steeper slope) Who had a constant speed? A Describe B from 10-20 min. B stopped moving Find their average speeds. A = (2400m) ÷ (30min) A = 80 m/min B = (1200m) ÷ (30min) B = 40 m/min

17. E. Graphing Motion Acceleration is indicated by a curve on a Distance-Time graph. Changing slope = changing velocity

18. E. Graphing Motion slope = straight line = flat line =

19. E. Graphing Motion Specify the time period when the object was... slowing down 5 to 10 seconds speeding up 0 to 3 seconds moving at a constant speed 3 to 5 seconds not moving 0 & 10 seconds

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