Block 1, of mass m1 = 1.30 kg , moves along a frictionless air track with speed v1 = 27.0 m/s . It collides with block 2, of mass m2 = 23.0 kg , which was initially at rest. The blocks stick together after the collision Part A. Find the magnitude pi of the total initial momentum of the two-block system.
Part B. Find vf, the magnitude of the final velocity of the two-block system.
Part C. What is the change ΔK=Kfinal−Kinitial in the two-block system's kinetic energy due to the collision?

Because the sun is the biggest and if the sun orbits the earth we will be dead probably

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.