OMG PLEASE HURRY. Consider a rocket ship launched from the surface of the Earth. As fuel is burned to
provide the force for the rocket to accelerate upward, the amount of mass of the ship
goes down. Assuming the force remains constant, how will the changing mass affect the
acceleration? Explain and connect the concept to whichever of Newton's Laws is most
appropriate.

The third hammer 8 pounds

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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.