model rocket a is launched at an angle of 70° above the x axis, with an initial velocity of 40 m/s. an identical rocket b is launched under the same conditions at an angle of 90° above the x axis, also with an initial velocity of 40 m/s. which is the true statement about the horizontal distances the rockets will cover?
a. rocket a will travel farther horizontally than rocket b.
b. rocket b will travel farther horizontally than rocket a.
c. the rockets will travel the same horizontal distances but will do so in different amounts of time.
d. there is not enough information to answer this question.

A. Rocket A will travel farther horizontally than rocket B.

This is because from the x axis, 40 m/s at 90 degrees travels directly vertical. 40 m/s at 70 degrees is slightly horizontal, so it will travel further horizontally.

The magnets would be | n s | and | s n|

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.