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MOTION What is the fastest animal?
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180 mph (290 km/hr) What is the fastest mammal? What is the fastest mammal?
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70 mph What is the fastest fish?
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65 mph What is the fastest reptile?
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22 mph What is the fastest insect?
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50 mph Who is the fastest human?
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Michael Johnson 23.29 mph (10.352 m/s) note: Usain’s 100 meter record = 23.08 mph Michael Johnson 23.29 mph (10.352 m/s) note: Usain’s 100 meter record = 23.08 mph What is the fastest humans have traveled?
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Space shuttle re-entry 17 000 mph What is the fastest known speed?
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3 x 10 8 m/s or 670 616 629 mph What is the slowest animal?
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Tortoise, sloth, or snail? Garden snail > 0.03 mph (Archie) giant tortoise >>0.23 mph 3-toed sloth >>>1.2 mph
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What is the slowest known speed? 2-7 cm/year (1-3 ipy)
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3) What is motion? The change in position relative to a frame of reference.
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4) A frame of reference is a set of points which enable an observer to measure the change in position of an object in motion.
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5) Motion can be measured in terms of SPEED >>>>>>>>> Velocity > ^ ^ < V Acceleration a.a..a…a….a…..a
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5) Different kinds of speeds a) Instantaneous speed is speed at a given point in time. b) Constant speed is speed that does not change. c) Average speed is the total amount of distance divided by the total amount of time. d) EXAMPLES OF EACH????
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8) Speed = distance / time or V = d/t 3 units for speed are m/scm/minkm/hr
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9) Steps for solving IPC problems. Step #1 Write given information. Step #2 Write the formula. Step #3 Substitute numbers & units into formula. Step #4 Solve using dimensional analysis. Step #5 Check work & box in Answer.
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10) How are different speeds graphed?
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11) Speed = rise /run because the rise = distance and the run = time 12) Use your book 13) Velocity is speed in a certain direction. Symbol is “ v ” 14) omit
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15) Velocity is speed with a direction 16) accelerator, brake, & steering wheel
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17) omit 18) Omit 19) Omit 20) omit
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21) Acceleration is the timed rate of change in velocity. 22) How can you accelerate a car. 23) Turn the steering wheel 24) How do people accelerate?
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25) Car acceleration www.walter-fendt.de/ph14ewww.walter-fendt.de/ph14e (Java 1.4, 43 applets, latest version) www.walter-fendt.de/ph14e www.walter-fendt.de/ph11ewww.walter-fendt.de/ph11e (Java 1.1, 41 applets, 2002-12-27) www.walter-fendt.de/ph11e What would negative accelera- tion look like? 26) YES!!! It can be negative because direction is a factor.
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27) Average acceleration divide the change in velocity by the change in time a = V / t means change in) V = V f - V i ; so a = V f - V i / t
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10) How is a graphed?
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