From the Edge of a Roof You Throw a Snowball

Multiple Choice

From the edge of a roof you throw a snowball downward that strikes the ground with 100 J of kinetic energy.Then you throw a second snowball upward with the same initial speed,and this too falls to the ground.Neglecting air resistance,the second snowball hits the ground with a kinetic energy of

A) less than 100 J.
B) 100 J.
C) 200 J.
D) more than 200 J.
E) none of the above