. (a) Explain how you can use the graph of position versus time
in Figure 2.54 to describe the change in velocity over time.
Identify (b) the time ( , , , , or ) at which the
instantaneous velocity is greatest, (c) the time at which it is
zero, and (d) the time at which it is negative.

(a) Sketch the graph of velocity versus time corresponding to the graph of displacement versus time given in Figure 2.55.

(b) Identify the time or times at which the instantaneous velocity is greatest.

(c) At which times is it zero?

(d) At which times it is negative?

(a) Sketch a graph of velocity versus time corresponding to the graph of displacement versus time given in Figure 2.55. (b) Identify the time or times (t_a, t_b, t_c, etc.) at which the instantaneous velocity is greatest. (c) At which times is it zero? (d) At which times is it negative?

(a) Sketch a graph of velocity versus time corresponding to the graph of displacement versus time given in Figure 2.55. (b) Identify the time or times (t_a, t_b, t_c, etc.) at which the instantaneous velocity is greatest. (c) At which times is it zero? (d) At which times is it negative?