Which falling object will result in the least kinetic energy when it collides with the ground?

Question

a
10 grams of dirt falling at 2 m/s
b
100 grams of dirt falling at 15 m/s
c
100 grams of water falling at 10 m/s
d
10 grams of water falling at 1 m/s

Answer 1

d
10 grams of water falling at 1 m/s