(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 ( ta , tb , tc , td , or te ) at which the instantaneous velocity is greatest, (c) the time at which it is zero, and (d) the time at which it is negative.

Step-by-step solution Step 1 of 6 (a) The slope of the graph of position versus time gives the velocity. Draw tangents on the given point, then the graph is as shown below between velocity versus time, Comment Step 2 of 6 Instantaneous velocity Comment Step 3 of 6 From above formula draw velocity versus time graph. Comment