Describing and Measuring Motion

Understanding Main Ideas
    Using the following paragraph, graph and answer questions 1 through 5.  Make sure you write the formula, plug in the numbers with units, and solve.   Mark the graph correctly.  The numbers should be on the lines.
On Saturday, Ashley rode her bicycle to visit  Maria.                          
Maria's house is 200 meters directly east  of Ashley's.
The graph should show the entire trip that Ashley made.
1.   Ashley rode at a constant speed of 40m/min for the first 4 minutes of her trip.

2.  Ashley stopped to talk with another friend for another 4 minutes during her trip.  How far was she from home?

3.  Because she told Maria she would be there in 10 minutes, she needed to bike at a greater speed. What is the slope of of the line after Ashley stopped to talk with her friend?  How is the slope of the line related to her speed?

4.  What was her average speed for the entire trip?

5.  What was her average velocity for the entire trip?
 

        From the list below, choose the term that vest completes each sentence.  Write your answers on the line provided.
motion
International System of Units
foot
reference point
yard
meter
average
velocity
speed

6.  Scientists around the world use the ______________, a system of measurement based on the number ten.

7.  An object is in ____________ when its distance from a(n) ____________________________is changing.

8.  Speed in a given direction is ______________________.

9. ____________________ can be calculated if you know that distance than an object travels in one unit of time.

10.  The basic SI unit of length is the __________________________.

Science Explorer Focus on Physical Science, Prentice-Hall, Inc