Molly and keitany ran the 7 mile (11.26 kilometers) falmouth road race. molly ran at a constant pace of 3: 05 per kilometer. keitany ran every one-kilometer interval in exactly three minutes and seven seconds. for example, keitany ran the one-kilometer distance from 4.57 kilometers to 5.57 kilometers in three minutes and seven seconds, and the one-kilometer distance from 10.1 kilometers to 11.1 kilometers in three minutes and seven seconds. at the end of the race, keitany finished ahead of molly. explain how. include a graph to support your reasoning.

Review multiple-concept example 7 in this chapter as an aid in solving this problem. in a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. in one instance, the radius of the circle is 0.626 m. at one point on this circle, the ball has an angular acceleration of 66.1 rad/s2 and an angular speed of 12.6 rad/s. (a) find the magnitude of the total acceleration (centripetal plus tangential) of the ball. (b) determine the angle of the total acceleration relative to the radial direction.