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Warm Up J anuary 30, 2013

Warm Up J anuary 30, 2013. What is your distance and displacement for each of the following? Traveling from A to B Traveling from A to D. Agenda. Warm Up Correct HW Speed & Velocity Notes “Describing Motion” Worksheet Speed and Velocity Investigation Lab HW: P. 347 #1-3

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Warm Up J anuary 30, 2013

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  1. Warm Up January 30, 2013 • What is your distance and displacement for each of the following? • Traveling from A to B • Traveling from A to D

  2. Agenda • Warm Up • Correct HW • Speed & Velocity Notes • “Describing Motion” Worksheet • Speed and Velocity Investigation Lab • HW: • P. 347 #1-3 • 9.2 Vocab Booklet (5 words on p. 342)

  3. 9.2 Speed and Velocity • Average speed is the total distance traveled divided by the total time taken to travel that distance. • Instantaneous speed is the speed of an object at a single instant. • Remember to use the SI units of meters and seconds!!!

  4. Calculating Speed The Speedy Secret Triangle!!! S=speed D=distance T=time To use the triangle, cover the quantity you are trying to find, and the formula appears!

  5. Examples Mrs. Hurwitz has a pet African Spur-Thighed Tortoise named Frankie. Although Frankie weighs nearly 100 pounds, he is not as slow as you might think. • If Frankie travels 7.8 meters in 10 seconds, what is his average speed? • If Frankie wants to walk at a pace of 1.5 m/s, how much time will he have to travel 16.5 meters? • If Frankie wants to walk at a pace of 2.3 m/s, how far will he have to travel in 6.5 seconds?

  6. Velocity • Velocity is a vector quantity. • It describe both the SPEED and the DIRECTION of an object in motion • A change in velocity can be due to a change in direction, a change in speed, or both.

  7. Mrs. Hurwitz is riding King Tritons Carousel of the Sea at Disneyland. The carousel is moving at a constant speed. Is her velocity changing?

  8. Graphing Speed • The slope of a distance vs. time graph will tell you the speed. • slope=rise/run • When the slope is zero, the object is at rest. • If the slope is a straight line, then the object is traveling at a constant speed. • If the line is curved, then the speed is not constant during that interval.

  9. Cool Down • Title: Speed vs. Velocity Double Bubble Map

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