What occurs in both solar and lunar total eclipses? i will be awarding brainliest answer.

a. one celestial body passes through the umbra of another.
b. a corona is produced when one celestial body passes in front of another.
c. one celestial body passes through the penumbra of another.
d. they only occur during the full moon phase of the lunar cycle.

Two cannon balls weighing 18 kg and 24 kg are chained together and fired horizontally with a velocity of 165 m/s from the top of a 21-m wall. the chain breaks during the flight of the cannonballs and the 18-kg cannonball strikes the ground at t = 1.5 s, at a distance of 240 m from the foot of the wall, and 7 m to the right of the line of fire. determine the position of the other cannonball at that instant. neglect the resistance of the air.