**Graphing Motion – Chapter 11 – Quiz Questions #2**

pp. 370 - 371

- What is an INDEPENDENT VARIABLE?

- What is a DEPENDENT VARIABLE?

- On a distance – time graph what is the “independent variable?”

- For line graphs which axis do you use for distance, which axis for time?

- If you have a distance – time graph of the speed of an automobile and it is NOT a straight line, what does that mean?

- On a distance – time graph for a vehicle moving at a constant speed, describe the slope of the line if the car is moving …. a) very fast, b) parked and not moving, c) moving slowly

- Imagine that you could ride a baseball that is hit hard enough for a home run. Using the concept of frame of reference, describe what is happening from these perspectives: a) batter, b) you sitting on top of the baseball, c) outfielder trying to catch the hit.

- Look at the three distance (vs) time graphs on page 371. What is the average speed of each car: a) Fast-moving car, b) Slow-moving car, c) Car with changing speed?

- Look at the Distance Vs. Time graph on the bottom left-hand corner of page 370. Visually compare the red line with the blue line and green line. Calculate the slope of the red line.

- Using the Distance Vs. Time graph on the bottom left-hand corner of page 370, list the relative speeds (fast, medium, slow) of the colored lines: a) Red line, b) Green line, c) Blue line.