1. Draw the following graphs (roughly) for a car that starts from rest and speeds up consistently for 10 seconds, then holds its speed constant for 10 seconds, then hits the brakes and comes to a halt in 5 seconds:
a. displacement vs. time
b. velocity vs. time
2. Think about the lab - you'll be comparing the velocity measurement of a toy car using 2 techniques: photogate timer and ticker-tape device (getting the slope of the graph). Which might you expect to be more "accurate"?
3. Find the definitions (mathematical and conceptual) of acceleration. What are the units?
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