1. A tennis player moves in a straight-line path as shown in the figure. Find the average velocity in the time intervals from (a) O to 1.0 s, (b) 0 to 4.0 s, (c) 10's to 5.0 s, and (d) O to 5.0 s x (m) . t (s) 5 -2 2. Parts (a), (b), and (c) of the figure represent three graphs of the velocities of different objects moving in straight - line paths as functions of time. The possible accelerations of each object as functions of time are shown in parts (d), (e), and (f). Match each velocity vs. time graph with the acceleration vs. time graph that best describes the motion. 3. A particle starts from rest and accelerates as shown in the figure. Determine (a) the particle's speed at t 10.0s and at t 20.0 s. and (b) the distance traveled in the first 20.0 s. a (m/s ) 2 0 it (s) 10 15 20 -2 -3