## 10.8.1 Vectors and Scalars

Things you should know after today:

• Keywords (magnitude, vector, scalar, displacement, distance, position, time intervals, speed, velocity, reference point)
• difference between a vector and a scalar
• how to determine displacement
• how to determine time intervals
• common conventions for direction

Resources and Activities:

• Video: Introducing Vector
• Describing the position of Gru
• Notes: Vectors and Scalars
• Determining time intervals and displacement

Assignment

• p147-149 of student workbook

## 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

## 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

## 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.