After a Shell Explodes at the Top of Its Trajectory,the

Multiple Choice

After a shell explodes at the top of its trajectory,the center of gravity of the fragments has an acceleration,in the absence of air resistance,

A) of less than g downward.
B) equal to g and downward.
C) greater than g and downward.
D) of g downward plus a forward component.
E) of g downward plus a backward component.