A body moves on a coordinate line such that it has a position s= ft)= on the interval 1sts2, with s in metors and t in seconds. a. Find the body's displacement and average velocity for the given time interval. b. Find the body's speed and acceleration at the endpoints of the interval. c. When, if ever, during the interval does the body change direction? The body's displacement for the given time interval is Om. (Type an integer or a simplified fraction.) The body's average velocity for the given time interval ism/s. (Type an integer or a simpified fraction.) The body's speeds at the left and right endpoints of the interval are Om/sandOm/s, respectively. (Type integers or simplifed fractions.) The body's accelerations at the loft and right endpoints of the interval arem/s² and m/s, respectively. (Type integers or simplifed fractions.) When, if ever, during the interval does the body change direction? Select the corrct choice below and fil in any answer boxes within your choice. OA. The body changes direction at t= (Type an integer or a simplified fraction.) OB. The body does not change direction during the interval.

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