The position of a body moving on a coordinate line is given by
(a) Find the body's displacement and average velocity for the given time interval.
Average velocity =
(b) Find the body's velocity at the endpoints of the interval.
(c) Find the body's acceleration at the endpoints of the interval.
(d) When, if ever, during the interval does the body change direction? If there is more than one answer, enter a comma separated list. If the body never changes direction during the interval, enter
You can earn partial credit on this problem.