A Person on the Edge of a Roof Throws a Piece

Multiple Choice

A person on the edge of a roof throws a piece of tile downward that strikes the ground with 100 J of kinetic energy. Another identical tile is thrown upward with the same initial speed, and this too falls to the ground. Neglecting air resistance, the second tile 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