MOTIONMOTION

What is the fastest animal?What is the fastest animal?

180 mph 180 mph (290 km/hr)(290 km/hr)

What is the fastest mammal?What is the fastest mammal?

70 mph70 mph

What is the fastest fish?What is the fastest fish?

65 mph65 mph

What is the fastest reptile?What is the fastest reptile?

22 mph22 mph

What is the fastest insect?What is the fastest insect?

50 mph50 mphWho is the fastest human?Who is the fastest human?

Michael Michael Johnson Johnson 23.29 mph 23.29 mph (10.352 m/s(10.352 m/s) ) note:note: Usain’s Usain’s 100 meter 100 meter record = 23.08 record = 23.08 mphmph

What is the fastest What is the fastest humans have traveled?humans have traveled?

Space shuttle re-entry 17 000 Space shuttle re-entry 17 000 mphmph

What is the fastest known speed?What is the fastest known speed?

3 x 103 x 1088 m/s m/s or or

670 616 629 670 616 629 mph mph

What is the slowest animal?What is the slowest animal?

Tortoise, Tortoise, sloth, or snail?sloth, or snail?Garden snail > 0.03 mph (Archie)

giant tortoise >>0.23 mph

3-toed sloth >>>1.2 mph

What is the slowest known What is the slowest known speed? 2-7 cm/year (1-3 ipy)speed? 2-7 cm/year (1-3 ipy)

3) 3) What What

is is motionmotion

??

The change in position relative The change in position relative to a frame of reference.to a frame of reference.

4) A frame of reference is 4) A frame of reference is a set of points which enable an a set of points which enable an observer to measure the observer to measure the change in position of an object change in position of an object in motion. in motion.

5) Motion can be measured in 5) Motion can be measured in terms of terms of

SPEED SPEED >>>>>>>>>>>>>>>>>>

Velocity > ^ < Velocity > ^ < VVAcceleration Acceleration a.a..a…a.a..a…a….a…..aa….a…..a

5) Different kinds of speeds5) Different kinds of speeds

a)a) Instantaneous speed is speed Instantaneous speed is speed at a given point in time.at a given point in time.

b)b) Constant speed is speed that Constant speed is speed that does not change.does not change.

c)c) Average speed is the total Average speed is the total amount of distance divided amount of distance divided by the total amount of time. by the total amount of time.

d)d) EXAMPLES OF EACH???? EXAMPLES OF EACH????

8) Speed = distance / time or 8) Speed = distance / time or

V V = d/t= d/t

3 units for speed are3 units for speed are

m/sm/scm/mincm/minkm/hrkm/hr

9) Steps for solving IPC 9) Steps for solving IPC problems.problems.Step #1 Step #1 Write given Write given information. information.

Step #2 Step #2 Write the formula. Write the formula.

Step #3 Step #3 Substitute numbers & Substitute numbers & units into formula.units into formula.

Step #4 Step #4 Solve using dimensional Solve using dimensional analysis.analysis.

Step #5Step #5 Check work & box in Check work & box in Answer.Answer.

10) How are different speeds 10) How are different speeds graphed?graphed?

11) Speed = rise /run11) Speed = rise /runbecause the rise = because the rise = distance and the run = distance and the run = timetime12) Use your book12) Use your book

13) Velocity is speed in a 13) Velocity is speed in a certain direction. Symbol is certain direction. Symbol is ““vv””

14) omit14) omit

15) Velocity is speed with a 15) Velocity is speed with a directiondirection

16) accelerator, brake, & steering wheel16) accelerator, brake, & steering wheel

17) omit 17) omit 18) Omit18) Omit19) Omit19) Omit20) omit20) omit

21) Acceleration is the timed 21) Acceleration is the timed rate of change in velocity.rate of change in velocity.

22) How can you accelerate a 22) How can you accelerate a car.car.

23) Turn the steering wheel23) Turn the steering wheel

24) How do people accelerate?24) How do people accelerate?

25) Car acceleration25) Car accelerationwww.walter-fendt.de/ph14ewww.walter-fendt.de/ph14e  (Java 1.4, 43   (Java 1.4, 43

applets, latest version)applets, latest version)www.walter-fendt.de/ph11ewww.walter-fendt.de/ph11e  (Java 1.1, 41   (Java 1.1, 41

applets, 2002-12-27)applets, 2002-12-27)

What would negative What would negative accelera-tion look like?accelera-tion look like?

26) YES!!! It can be negative 26) YES!!! It can be negative because direction is a because direction is a factor. factor.

27) Average acceleration 27) Average acceleration divide the divide the changechange in in velocityvelocity by by the the changechange in in timetime

a = a = VV / / t t means change in)means change in)

V = VV = Vff - V - Vii ; so ; so

a = a = VVff - V - Vii / / t t

10) How is 10) How is aa graphed? graphed?