10. POSITION-TIME GRAPHS WORKSHEET On this graph, positive positions and directions of travel are considered to be North.
# During which time interval (AB, BC, CD, DE, EF, FG) was the cart traveling at its greatest speed?
# During which time interval (AB, BC, CD, DE, EF, FG) was the cart traveling at its least (nonzero) speed?

# During which time interval(s) (AB, BC, CD, DE, EF, FG) was the cart at rest?
# During which time interval(s) (AB, BC, CD, DE, EF, FG) did the cart travel in a negative direction?

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.  

t = 1/400 h   ⇔ 0.0025 h ⇔ 9s ⇔ 0.15 m

any of the answers are correct.