Dak Prescott throws a football horizontally with an initial velocity of 10 m/s to Amari Cooper into the end-zone, to once again defeat the lowly NY Giants. The ball drops towards the ground and Cooper catches it just before it hits the ground. How many seconds was the ball in the air if Cooper caught the ball 2m below from where it was thrown? A- 0.64 s
B- 0.41 s
C-20 S
D- 0.2 s

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.