(a) In Figure 2.2 the data points for frames 8-12 are all at position \(12.0\mathrm{~mm}\). Explain what this alignment of data points means in terms of what is happening in the real world.

(b) The data points for frames 7 and 14 are aligned horizontally. What does this alignment imply about the real-world motion?

(c) What would it mean if two data points were aligned vertically? Could this happen?

Figure 2.2 My distance from the left edge of each frame in Figure 2.1 versus frame number. We see that I start, in frame 1, 2.5 mm from the left edge of the frame, walk forward to 12.0 mm from the left edge at frame 8, stay there for five frames, then walk backward to 8.5 mm from the left edge. distance from left edge (mm) 15 10 5 pausing walking backward walking forward 0 frame number 0 5 10 15 20