please help!! thanks!!?

Question

If a postion vs. time plot is rising in time (but not in such a way as to produce a vertical line on the graph) then we can know for certain that ______________________________...?

a) velocity is changing
b) velocity is constant
c)position is constant
d) acceleration is constant
e) acceleration is changing
f) it has a velocity <0 and velocity is changing
g) it has a velocity > 0 but we don't know if the velocity is constant
h) we can't know any of these

Answer 1

If position is changing, then it's moving, hence, has velocity. Without the slope, you cannot tell whether the velocity is changing or is constant.

Answer 2

For a rising position, there is a + velocity (constant or variable), so g) is correct