Confused about c).

would it be q-r because the velocity isn’t increasing or all of them because they are all linear lines?

the question says interval and not interval(s) so that’s why it’s making me think it may be the latter.

Q-R is correct

Explanation:

A constant velocity means a velocity that is not changing.

The velocity is increasing (changing) in O-P, P-Q and R-S.

Since the Q-R segment is a horizontal line, the velocity stays the same. If you imagine the graph's velocity y-axis is labelled, it might be easier to think about.

The velocity is constant only in the Q-R interval.

Explanation:

The graph shows the velocity over time. In the Q-R interval the velocity is equal all over the interval, that is, it is constant. In the other intervals, the velocity increase with some rate, so it is not constant.

the answer for apex is the lowest

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.