1 / 12

Speed Graphs

Speed Graphs. Slide Show #3a. Why graphs?. Describing motion can be hard to do with words. Sometimes graphs help make motion easier to see. Distance-Time Graphs. Also known as speed graphs. Time is always plotted on the x-axis! Distance is always plotted on the y-axis.

rudolf
Download Presentation

Speed Graphs

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Speed Graphs Slide Show #3a

  2. Why graphs? • Describing motion can be hard to do with words. • Sometimes graphs help make motion easier to see.

  3. Distance-Time Graphs • Also known as speed graphs. • Time is always plotted on the x-axis! • Distance is always plotted on the y-axis.

  4. I’m NOT moving! • If an object is not moving, a horizontal line is shown on the distance time graph. • As time goes by, distance doesn’t change. • Object is not moving. (see blue line)

  5. Cruise Control! • There is a steady increase in distance with time. • You are in CONSTANT speed • It is shown as a straight line with a slope! (not flat).

  6. Who’s faster? • Both lines are straight and sloped. • Both lines have constant speed. • But the yellow line is faster than the blue line. • The yellow line is steeper than the blue line. • The steeper the line, the faster the speed!

  7. Step on it! • The line in this graph is curving upwards. • The speed is increasing (getting steeper). • It is accelerating!

  8. What’s going on?

  9. Ewww! Numbers Yellow speed = 30 meters/10 seconds = 3 m/s Blue speed = 20 meters/20 seconds = 1 m/s

  10. Here is another one! • Blue Line’s speed is • 100 m/10s = 10 m/s • Aqua Line’s speed is • 50 m/10s = 5 m/s • Purple Line’s speed is • 150 m/20s = 7.5 m/s Notice the purple line slope’s downward. This means it returned back to start point!

  11. Wrap it up!!!

  12. Check out the Motion Man! • If it acts up, just click restart. • Choose “one” for number of graphs. • Top graph should read “distance” • And now, The Moving Man!

More Related