Graphing Motion

DO NOW:-Enter silently-Grab papers from the entrance table-Work on bellringer-Place Homework on your desk

Vocabularydistance-time graph

Objective: • Understand how to read and interpret distance time

graphs• Things to know from them:

• How to read the total distance of an object• How to read how long it takes an object to travel

a certain distance• How to identify what the speed is based on the

sloap of the line• When it moves faster, slower, is at a constant

speed and stops moving

Explore Activity

Turtle Travels

Scientists use tracking devices to monitor the distances different turtles migrate.

Distance vs. Time GraphWhat’s the mistake?

Graphing Speed:

Distance vs. Time Graphs

Phoenix

Denver

Graphing Speed:

Distance vs. Time GraphsSpeed = Slope = Rise/

Rise

Graphing Speed:

Distance vs. Time Graphs

Rise=?

3 h

600 km

Speed = Slope = Rise/

Graphing Speed:

Distance vs. Time Graphs

Rise=?

3 minutes

600 m

Speed = Slope = Rise/

Rise/

Different Slopes

0

1

2

3

4

5

6

7

8

1 2 3 4 5 6 7

Time (hr)

Dis

tan

ce

(k

m)

Run = 1 hr

Run = 1 hr

Run = 1 hr

Rise = 0 km

Rise = 2 km

Rise = 1 km

Slope = Rise/Run= 1 km/1 hr

= 1 km/hr

Slope = Rise/Run= 0 km/1 hr

= 0 km/hr

Slope = Rise/Run= 2 km/1 hr

= 2 km/hr

Question

• Below is a distance vs. time graph of my position during a race. What was my AVERAGE speed for the entire race?

0

2

4

6

8

10

12

14

0 1 2 3 4 5 6

Time (hr)

Dis

tan

ce

(k

m)

Average Speed = Total distance/Total time = 12 km/6 hr= 2 km/hr

Run = 6 hr

Rise = 12 km

Question

• What does the slope of a distance vs. time graph show you about the motion of an object?

• It tells you the SPEED

Question

• Below is a distance vs. time graph for 3 runners. Who is the fastest?

0

1

2

3

4

5

6

7

0 1 2 3 4 5 6 35

Time (h)

Dis

tan

ce

(m

i.)

Bob

Jane

Leroy

Leroy is the fastest. He completed the race in 3 hours

The line would point upward then downward.

D

The line would point straight upward to the right.

C

The line would go up and down.

B

The line would curve upward and to the right.

A

The data in the table below show how far a sea turtle travels over several days. What would the line on a graph of this data look like?

Mini-Assessment

1.

CORRECT

The line shows the path of the object that is moving.

D

The line shows a change in speed if its angle changes.

C

The line in the graph points downward if the object is speeding up.

B

A line with a curve indicates that the object has constant speed.

A

Which statement is true of a distance-time graph?

Mini-Assessment

2.

CORRECT

The Kemp’s ridley sea turtle moved at constant speed while the speed of the green sea turtle changed.

D

The Kemp’s ridley sea turtle changed direction while the green sea turtle did not change direction.

C

The green sea turtle moved faster than the Kemp’s ridley sea turtle did.

B

Both types of sea turtles moved at the same speed.

A

Which statement best describes the data in the graph?

Mini-Assessment

3.

CORRECT

on top of the green sea turtle lineD

between the other two linesC

below the Kemp’s ridleysea turtle line

B

above the green sea turtle line

A

Scientists measured the speed of a third turtle. Starting at zero, it had constant velocity and was 75 km out on day 6. Where on the graph would the line for this turtle fall?

Mini-Assessment

4.

CORRECT

We do

• Work on the handout with your table group

• Voice level 1 (whisper)

Exit Ticket

• Work silently