Which best describes the speed of an object that does not change over time?
When does an object have zero speed?
Which graph represents an object moving at a constant speed?
What does a horizontal line on a distance-time graph indicate?
Speed can be measured in...
Distance can be measured in...
Time can be measured in...

Using the graph, what can be determined about the student's walk to school between 3 minutes and 7 minutes?

Using the graph, how can you comapre the two runners?
What does it mean when an object is in motion?