10.8.2 Position-Time Graphs

Graphs that show position vs time (position on the vertical axis and time on the horizontal axis) are a great way of showing a lot of information in one diagram.  Additionally, the slope of the line can tell us about how fast the position is changing, and whether the object is moving with uniform motion.

Keywords to know:

• uniform motion
• slope of a line
• Line of best fit

After today you should be able to:

• Read data from a position-time graph
• Determine whether an object is moving with uniform motion by analyzing the slope of a line on a position time graph
• Determine direction of travel by looking at the slope of a line on a position-time graph
• Draw a line of best fit

Resources

• Notes

Assignment

• Workbook p150-152
• Worksheet: Drawing a line of best fit

Attachments:

File	Description	File size
8.2.notes.position.time.pdf		79 kB

10.8.3 Average Velocity

Position Time graphs relate the position and time of an object in motion, but the slope also tells us some very important things; it will tell us the direction of motion and the rate of travel.  Today you will relate slope with velocity, speed, and average velocity.

Resources

• Notes

Assignment

• Line of Best Fit Assignent (due before you leave)
• Workbook p156-159

Attachments:

File	Description	File size
8.3.notes.average.velocity.pdf		257 kB

10.8.4 Walk This Way: Uniform Motion

Today you will see that it is very hard to move with uniform motion, but we can still calculate the average velocity of a person who is trying to move with uniform motion.

Things you should be able to do after today:

• Plot data on a position-time and draw a line of best fit
• Calculate the slope from a position time graph and determine what it means

Notes:

• no notes today!

Assignment:

• Walk this way: The assignment has been attached.  If you need data, the data we collected is also attached for each class.
• You should come get a rubric or print out the attached one.  This should be submitted with your assginment
• Due next class. 

Attachments:

File	Description	File size
8.4.walk.this.way.blockG.data.PDF	Block G Data	56 kB
8.4.walk.this.way.blockH.data.pdf	Block H Data	53 kB
8.4.walk.this.way.pdf	Walk This Way Assignment	14 kB
8.4.walk.this.way.rubric.pdf	Marking Rubric for this assignment	8 kB
gridpaper.PDF	Extra grid paper	3 kB

10.8.Review

Make sure you know your vocabulary and how to solve problems involving vector measurements of displacement, velocity and time intervals.

Attachments:

File	Description	File size
ch8.review.key.pdf		349 kB