Graphing MotionGraphing Motion

Mrs. WolfeDistance-Time GraphSpeed-Time Graph

Problem:Problem:

Each color represents a different car. Are their motions the same? Explain what you know.

Time for a Lab!Time for a Lab!

Speed of the Bubble!

Distance-Time GraphDistance-Time Graph

slope =

steeper slope =

straight line =

flat line =

Distance-Time Graph

A

B

faster speed

constant speed

no motion

speed

Reading the GraphReading the Graph

Who started out faster? A (steeper slope)

Who had a constant speed? A

Describe B from 10-20 min. B stopped moving

Find their average speeds. A = (2400m) ÷ (30min)

A = 80 m/min B = (1200m) ÷ (30min)

B = 40 m/min

Distance-Time Graph

A

B

0

100

200

300

400

0 5 10 15 20

Time (s)

Dis

tan

ce (

m)

Distance-Time GraphDistance-Time Graph

Acceleration is indicated by a curve on a Distance-Time graph.

Changing slope = changing velocity

Speed-Time GraphSpeed-Time Graph

0

1

2

3

0 2 4 6 8 10

Time (s)

Sp

ee

d (

m/s

)

Speed-Time Graph

slope =

straight line =

flat line =

acceleration +ve = speeds up -ve = slows down

constant accel.

no accel. (constant velocity)

Reading the GraphReading the Graph

0

1

2

3

0 2 4 6 8 10

Time (s)

Sp

ee

d (

m/s

)

Speed-Time GraphSpecify the time period

when the object was... slowing down

5 to 10 seconds speeding up

0 to 3 seconds

moving at a constant speed 3 to 5 seconds

not moving 0 & 10 seconds

Do you understand? Do you understand?

Time for a WS!