2. A car drives across a bridge supported by the ground at either end as ilustrated in
the diagram. The combined weight of the car and the bridge is 39 tons.
? tons
19 tons
39 tons
If the ground at the east end of the bridge exerts an upward force of 19 tons on the
bridge, what force is exerted by the ground on the west end of the bridge?
A. 58 tons
B. 39 tons
C. 20 tons
D. 19 tons

Cpowerlifting my boi

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.