Transcript Distance vs Displacement, Speed vs. Velocity

Unit 2 (Motion & Forces), Day 1
Distance vs. Displacement, Speed vs. Velocity
Student Entrance
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Pick up 4 papers
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Catalyst, Walking Directions (Distance),
Physics Reference Sheet, Homework
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Begin Catalyst
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Silent activity
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Respond to questions on the CATALYST sheet
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Use complete sentences
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Will be turned in to Mrs. Larkin
Agenda
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10 min: Catalyst (Exam Reflection)
25 min: Activity (Distance Activity, Displacement Activity)
25 min: Notes (Dist. vs. Disp., Scalar vs.Vector)
7 min: Break
8 min: Practice (Distance vs. Displacement)
10 min: Notes (Speed vs. Velocity)
13 min: Practice (Speed)
2 min: Homework (Speed vs. Velocity)
Collect Catalyst
Announcements
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If you were absent Monday/Tuesday, I need your labs!
Students must take exam by Thursday at 4:00 PM
Otherwise you will receive a ZERO in the gradebook
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Period 1-3
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Period 2-4
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Robbie Schraer
Period 6-8
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Aidan Mobley
Brie Quinones
Bianca Covarrubias
Jasson Montenegro
Siri Khalsa
Period 9-11
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Lauren Lopez
Walking Directions (Distance)
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Follow the directions on the worksheet
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Stay in the courtyard
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Everyone should do their own steps and turns
5 minute activity
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Be quick and efficient
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Focus on what you are doing, not on others
Think-Pair-Share
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Mrs. Larkin’s Example
Think-Pair-Share
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Think:
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Recall your journey
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Map it out on the dots as Mrs. Larkin did
Pair:
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Compare journeys with your group members
Share:
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3 people called at random to draw their journeys
Walking Directions (Displacement)
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NEW DIRECTIONS!
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Follow the directions on the worksheet
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Stay in the courtyard
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Everyone should do their own steps and turns
5 minute activity
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Be quick and efficient
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Focus on what you are doing, not on others
Think-Pair-Share
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Think:
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Recall your journey
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Map it out on the dots as Mrs. Larkin did
Pair:
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Compare journeys with your group members
Share:
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3 people called at random to draw their journeys
Think-Pair-Share
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Mrs. Larkin’s Example
Collect BOTH Walking Directions
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All that you should have left
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White homework worksheet
Pink physics equation sheet
Distance vs. Displacement
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Notebook
9/25 or 9/26
UNIT 2 (MOTION & FORCES), DAY 1
• Distance vs. Displacement
Distance vs. Displacement
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Draw small Venn Diagram (about size of hand)
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Talk to your group:
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2 similarities for distance & displacement
1 difference for distance & displacement
Distance vs. Displacement
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Distance: how much the object has moved
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Displacement: how far object is from its starting point
Distance vs. Displacement
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Notebook
9/25 or 9/26
UNIT 2 (MOTION & FORCES), DAY 1
• Distance vs. Displacement
• Scalars vs.Vectors
Scalar vs. Vector
 Scalar: measurement
 To
, no direction
represent a scalar, use a letter
 Distance: d
 Time: t
 Speed: v
Scalar vs. Vector
 Vector: measurement WITH
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direction
To represent a vector, use a letter & arrow
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Displacement: x or y
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Velocity: v
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Acceleration: a
Scalar vs. Vector
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Why x or y for displacement?
+y(vertical)
-x
Memory Trick:
• H is before V, just
like X is before Y
F
A
L
L
I
N
G
D
O
W
N
-y
ALONG THE GROUND
+X (horizontal)
BREAK
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7 minutes
Must be seated, otherwise TARDY
Practice
Whiteboards
60
seconds: group name
Work with your group
Do not lose markers
Try to not show your
answers to other groups!
Practice
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Mrs. Larkin runs forward 10 feet. She then turns around
and runs back 7 feet. What distance did she run?
Practice
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Mrs. Larkin runs forward 13 feet. She then turns around
and runs back 6 feet. What displacement did she run?
Practice
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Shadow runs 3 meters east, then 2 meters north, then 3
meters west. What distance did she run?
Practice
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Shadow runs 4 inches north, then 5 inches east, then 4
inches south. What displacement did she run?
Practice
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Ms. Parsons drives to and from Da Vinci Design, which is
located 5 miles from her house.
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A. What is the total distance she drives every day?
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B. What is her displacement every day?
Practice
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La Luz runs a complete circle around the classroom.
What displacement did she run? (Use feet)
Practice
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La Luz and Shadow are racing each other around a
circular track. The track is 500 meters around and 159
meters across. La Luz gets tired and stops halfway
around. Shadow finishes the race.
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A. Who has the greater displacement?
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B. By how many meters?
500 meters around
159
meters
across
Practice
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La Luz and Shadow are racing each other around a
circular track. The track is 500 meters around and 159
meters across. La Luz gets tired and stops halfway
around. Shadow finishes the race.
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A. Who ran the greater distance?
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B. By how many meters?
500 meters around
159
meters
across
Figuring Out an Equation
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Here are some units for speed:
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Miles per hour (mi/h)
Kilometers per hour (km/h)
Meters per second (m/s)
Feet per second (ft/s)
What do all the numerators
have in common?
mi
h
km
h
m
s
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What do all the denominators
have in common?
ft
s
Speed vs. Velocity
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Notebook
9/25 or 9/26
UNIT 2 (MOTION & FORCES), DAY 1
• Distance vs. Displacement
• Scalars vs.Vectors
• Speed vs.Velocity
Speed vs. Velocity
Speed (SCALAR) is the total distance
traveled in a certain amount of time.
Speed vs. Velocity
Velocity (VECTOR) is the displacement (change in
position) that occurs in a certain amount of time.
Practice - Whiteboards
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Running 59.8 miles in 2 hours
When finished with whiteboards, get this problem into notebooks
Practice - Whiteboards
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Running 150.6 kilometers in 3 hours
When finished with whiteboards, get this problem into notebooks
Practice - Whiteboards
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Running 33.75 meters in 2.5 seconds
When finished with whiteboards, get this problem into notebooks
Practice - Whiteboards
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Running 21.65 feet in 0.5 seconds
When finished with whiteboards, get this problem into notebooks
Physics Reference Sheet
Speed:
Velocity:
Homework
 Unit
2, Day 1 – Homework Worksheet
for Speed & Velocity
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Due FRIDAY, SEPTEMBER 27TH
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Look at the homework on projector
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If there is extra time, students can work on this before leaving