Which one of the following is NOT acceleration A.
a change in mass
B.
a change in direction
C.
an increase in velocity
D.
a decrease in velocity

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees. 

e/c, where e is its total energy