Anurture student of allen was standing at kota platform in front of 3rd coach (from start) of rajdhani express. if train starts moving with constant acceleration 3rd coach crosses the student in 5 sec. then which coach will pass the stude after 10 sec from start? (2) 7 (4) 8 (3) 5

If football was tossed in air without gravity or friction the ball would go into space

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.