Q 3 A body moves on a coordinate line such that it has a position 5 = f:[t}= ? t on the interval '1 st53. with sin meters and t in seconds. t a. 3mg the body's displacement and average velocity for the given time interval. b. 3mg the body's speed and acceleration at the endpoints of the interval. c. When, if ever. during the interval does the bodyr change direction? The body's displacement for the given time interval is I: m. [Type an integer or a simplied fraction.)