Alunar occultation occurs when the moon passes in front of a background star or other object. suppose it takes 0.015 seconds for the moon to completely cover a background star. what is the star's angular size in arcseconds? you'll need to know the moon's angular speed on the celestial sphere, which can be found using the answer to problem 4. (sorry about all the unit conversions.) suppose the star's distance is 100 parsecs. what is its diameter? you will need to use the small angle formula.

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. 

Don't smoke.it ruins your life.confront your husband on how you are feeling and why you're depressed.weed is never the answer.there are so many more options out there for depression.weed will make the depression worse.so, stay clean and you will have support