[单选题]
A brick is moving at a speed of 3 m/s and n/mqi(f(133iqs)zq had :t 3p w sjir*a pebble is moving at akje1fhdc5 .h ) speed of 5 m/s. If both objects have the same kinetic energy, what is kh .fdc1 5je)hthe ratio of the brick's mass to the rock's mass?
