1. Measuring Motion

2. Some vocab words coming up…
Motion- an objects change of position relative to a reference point
Usain Bolt- probably winning a race or something like that

3. Frame of Reference- a way to specify the precise location of objects in space
Somebody foolishly frolicking on the beach

4. Distance vs. displacement…
Distance- how far an object moves
Displacement- the overall change of position of an object (direction included)
Blue Line = Displacement
Black Line = Distance traveled

5. Distance vs displacement
Distance = a length (and nothing else)
(14 miles)
Displacement = a length plus direction
(14 miles West)

6. Distance or displacement?
76 km North = _______________________
34 mi =_____________________________
40,123 meters =________________________
3,212,532 miles Southeast=______________

7. Let’s do a sports analogy…
Hit a home run…
Distance 360 feet (90X4)
Displacement = Zero!
Started at home, ended at home
Hit a single…
Distance = 90 feet
Displacement = 90 feet NE

8. Speed vs Velocity It’s real, real simple.
Speed- DISTANCE traveled over a specific time
Velocity- DISPLACEMENT over a specific time
15 mi/hr  speed
15 mi/hr SOUTH velocity

9. Review… Speed = distance/time Distance = magnitude only (Scalar)
Velocity = displacement/time
Displacement = magnitude plus directi0n (Vector)

10. Review…

11. Let’s watch a hockey video…
hockey/41c74cc3-2d9a-40f6-95c1- 76c04834afce