[单选题]
A brick is moving at a sp*,ka xo4w /ythvv 2m5dc6hzu7 eed of 3 m/s and a pebbl ly ++vjqibj2r92u9m1 pns d9se is moving at a speed of 5 m/s. If nb + j+jsd199m2 vu9s2lrqiypboth objects have the same kinetic energy, what is the ratio of the brick's mass to the rock's mass?
