4 Students are using an air rocket to investigate the relationship
between force and an object's motion.
Students pump air into the rocket, then release the rocket, and the
compressed air pushes the rocket upward.

A. The length of the hose attached to the pump

B. The distance traveled by the rocket

C. The amount of air pumped into the rocket

D. The height of the rocket from fins to cone

C. the amount of air pumped into the rocket

Ithink the answer is d i hope it my friend message me if i’m wrong and i’ll change my answer and fix it for you

You need to be more specific.  i really don't know what a "motion map" is.you can draw a graph of an object's position, distance, displacement, speed,velocity, or acceleration versus time, or you can draw a graph of the object's x-position versus its y-position and not give any information about time at all.if the graph presents position or displacement against time,  then constant velocity is a straight line . . i.e. a line that has  constant slope.if the graph shows speed against time, then constant velocityis a horizontal piece of line.if the graph shows acceleration against time, then constant  velocity is a piece of line that lies on the x-axis . . it's value is zero.