A dancer moves in one dimension back and forth across the stage.'If the end of the stage nearest to her is considered to be the origin of anja axis that fund parallel to the stage, her position, as i function of time, Is given by *(r) = [(0.02 m/s])t) - (0.39 m/s ):3 + (1.82 m/s)t - 1.72 mji. (a) Find an expression for the dancer's velocity as a function of time. (Assume SI units. Do not include units in your answer: Use the following as necessary ? ) (b) Graph the velocity as a function of time for the 14 s over which the dancer performs ( the dancer begins when ( = () and whe the graph to determine 0 my/'s. (Submit a file with a maximum size of 1 MB.) Chacan File Ino file solocing