Review 1.This is the point that all motion will be measured relative to. A. Position B. Reference C....
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![Page 1: Review 1.This is the point that all motion will be measured relative to. A. Position B. Reference C. Displacement D. Distance.](https://reader036.fdocuments.us/reader036/viewer/2022062421/56649e0d5503460f94af60f4/html5/thumbnails/1.jpg)
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Review
1. This is the point that all motion will be measured relative to.
A. Position
B. Reference
C. Displacement
D. Distance
![Page 3: Review 1.This is the point that all motion will be measured relative to. A. Position B. Reference C. Displacement D. Distance.](https://reader036.fdocuments.us/reader036/viewer/2022062421/56649e0d5503460f94af60f4/html5/thumbnails/3.jpg)
Review2. A point some distance and
direction from my reference point.
A.Position
B.Reference
C.Displacement
D.Distance
![Page 4: Review 1.This is the point that all motion will be measured relative to. A. Position B. Reference C. Displacement D. Distance.](https://reader036.fdocuments.us/reader036/viewer/2022062421/56649e0d5503460f94af60f4/html5/thumbnails/4.jpg)
Review
3.The change in position.
A.Position
B.Reference
C.Displacement
D.Distance
![Page 5: Review 1.This is the point that all motion will be measured relative to. A. Position B. Reference C. Displacement D. Distance.](https://reader036.fdocuments.us/reader036/viewer/2022062421/56649e0d5503460f94af60f4/html5/thumbnails/5.jpg)
Review
4.The total distance traveled.
A.Position
B.Reference
C.Displacement
D.Distance
![Page 6: Review 1.This is the point that all motion will be measured relative to. A. Position B. Reference C. Displacement D. Distance.](https://reader036.fdocuments.us/reader036/viewer/2022062421/56649e0d5503460f94af60f4/html5/thumbnails/6.jpg)
Average SpeedDef: Total distance
covered divided by the total time
Path does not matter for speed!
What is the average speed of the car over
5 sec?Total distance/total time
60m/5sec = 12m/sec
Speed of a Car
0
20
40
60
80
100
0 sec 1 sec 2 sec 3 sec 4 sec 5 sec
Time
Dista
nce
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VelocityDef: the speed of an object in a certain direction–Vector quantity–Units: m/s–Slope of the position vs. time graph–Symbol: V
Example: 100mph to the East
If the speed or direction changes, the velocity changes
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Where is the car moving with the greatest velocity? (time frame)
Velocity of a Car
0
20
40
60
80
100
0 sec 1 sec 2 sec 3 sec 4 sec 5 sec
Time
Po
siti
on
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Speed vs. Velocity
Speed
Scalar quantity
Unit: m/s
Slope of the distance vs. time graph
Symbol: s
Velocity
Vector quantity
Unit: m/s
Slope of the position vs. time graph
Symbol: v
![Page 10: Review 1.This is the point that all motion will be measured relative to. A. Position B. Reference C. Displacement D. Distance.](https://reader036.fdocuments.us/reader036/viewer/2022062421/56649e0d5503460f94af60f4/html5/thumbnails/10.jpg)
Instantaneous Velocity
Def: the velocity of an object at a particular moment
(snap shot)
Example: the speed on the speedometer, and your direction
![Page 11: Review 1.This is the point that all motion will be measured relative to. A. Position B. Reference C. Displacement D. Distance.](https://reader036.fdocuments.us/reader036/viewer/2022062421/56649e0d5503460f94af60f4/html5/thumbnails/11.jpg)
Velocity of a Car
0
20
40
60
80
100
0 sec 1 sec 2 sec 3 sec 4 sec 5 sec
Time
Posit
ion
QuestionsWhat is the
instantaneous
velocity of the car
at 3.5 sec?
What is the
average velocity of
the car over 4 sec?
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QuestionsA: Speed B: Velocity C: Both
1. Depends on time, distance, and direction
2. Only depends on time and distance3. Has the units m/s4. Can be found using the position vs.
time graph5. Can be found using the distance vs.
time graph
![Page 13: Review 1.This is the point that all motion will be measured relative to. A. Position B. Reference C. Displacement D. Distance.](https://reader036.fdocuments.us/reader036/viewer/2022062421/56649e0d5503460f94af60f4/html5/thumbnails/13.jpg)
Formula:
V
1=
d
t
Speed or Velocity (m/s)
Distance (m)
Time (s)
Calculating Speed or Velocity
S
1=
d
t
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4-Step Approach to solving problems
Step 1 Read the problem, list the variables… what are you trying to find?
Step 2 Write the formula
Step 4 Write answer with correct units!
Step 3 Plug-n-Chug, substitute numbers into the formula and solve
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Class PracticeWhat is the speed of an electric scooter that travels 20 meters in 2 seconds?
A ball is thrown so that it travels 120 meters in 8 seconds. How fast did it travel?
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Class Practice
If a girl walks at a rate of 2 m/s, how long will she take to walk 100 meters?
A motorcycle travels at 25 m/s for 10 minutes (600 s). How far does it travel?
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1. A Cheetah runs 120 meters in 2 seconds. What is its speed?
2. Turtles walk at a speed of 20 meters per hour. How long does it take a turtle to travel 10 meters?
3. Your bowling ball is rolling 2.5 m/s toward the pins. How long does it take to travel 12 m?
4. If it takes 5 minutes to drive to the store at 35 mph (miles per hour), how far away is the store?
Independent Practice / Exit Ticket
![Page 18: Review 1.This is the point that all motion will be measured relative to. A. Position B. Reference C. Displacement D. Distance.](https://reader036.fdocuments.us/reader036/viewer/2022062421/56649e0d5503460f94af60f4/html5/thumbnails/18.jpg)
Mindy drives 55 mph for 30 minutes and then drives 65 mph for 2 hours. How far does she drive?
If Jim travels 13 km in 8 minutes, and Sarah travels 24 km in 17 minutes, who is going faster?