The author writes that Kepler-10b is "unlikely to support life because it is 60 times closer to its star than Earth is to the sun." Why might the author draw this conclusion?

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. 

Ok? don't be a fake friend, only be friends with people that you are interested in developing a strong relationship with. don't be fake.