Agenda: Motion Graphs Cornell Notes

Bellwork: James ran 400 kilometers in 24 hours. Calculate

his speed.

Kelly skipped 30 meters in 3.5 minutes. Calculate her speed.

What are the differences between Speed and

Velocity?

How do we calculate Speed, Distance and Time?

What are DISTANCE-TIME GRAPHS?

Distance-time graphs can be used to describe journeys.

distance on the vertical (y) axis

time on the horizontal (x) axis.

What does a d-t graph look like with no movement?

Flat

How can you tell an object is moving fast?

Line slopes up at a steep angle

When the object goes back to the starting point, what does the graph

look like? Slopes down

What does a d-t graph look like for acceleration (speeding

up)? curved

EXAMPLES1. The following graph describes the journey of a snail.

a. Describe the motion of the snail.b. What is the speed of the snail during each part of the journey?

Question 1Which graph shows the object travelling at a faster speed?

A B

Question 2Which part of the graph shows that the object is stationary?

A B C

Question 3Which line shows an object that is accelerating?

A B

Question 4How far did object A travel?

50 metres 100 miles 100 metres

Question 5What was the speed of object A?

200 m/s 5 m/s 0.2 m/s

Question 6Which part of the graph shows that the object is returning to the start?

A

B C

A B C

Question 7Which parts of the graph shows that the object is travelling at a constant speed?

A

B C

A+B B+C A+C

Question 8How long was the cyclist stationary for?

A

B C

80s 40s 220s