Chapter 2, Problem 74PCE

Predict/Explain A carpenter on the roof of a building accidentally drops her hammer. As the hammer falls it passes two windows of equal height, as shown in Figure 2-39. (a) Is the increase in speed of the hammer as it drops past window 1 greater than, less than, or equal to the increase in speed as it drops past window 2? (b) Choose the best explanation from among the following

1. I.          The greater speed at window 2 results in a greater increase in speed.
2. II.        Constant acceleration means the hammer speeds up the same amount for each window.
3. III.       The hammer spends more time dropping past window 1.

Figure 2-39

Problem74