From the edge of a roof you throw a snowball downward that strikes the ground with 100J of kinetic energy. then you throw a seco
nd 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. 100J
b. 200J
c. more than 200J
d. less than 200J
e. none of the above