A 742 kg wrecking ball is attached to a crane 7 m above the ground. What is the gravitational potential energy of the wrecking ball at this height?
A.
1,038.8 J
B.
50,901.2 J
C.
5,262.6 J
D.
7,330.4 J

This is the answer of your question

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. 

How are period and frequency related to each other? dperiod is the reciprocal of frequency.

+10 that is always the common denominator