> how much water is in that well? Given the viscosity of air vs. water, one might assume there's no water in the well. Also, given some surface area of a bear

> how much water is in that well? Given the viscosity of air vs. water, one might assume there's no water in the well. Also, given some surface area of a bear, and air pressure from a cushion of air formed under the falling bear, the fall speed does seem a little high, at least for a calculation with that number of decimal places, but perhaps the well was located in the crust of the earth where gravity's a tad higher. Living bears are also buoyant, and will be slowed down considerably on meeting the water, so the bear is unlikely to have reached the bottom of a water-filled well for a long period, if at all. To answer OP, I'd say the bear is brown, because of the mud from the base of the (somewhat empty) well. However to an outside observer, given the lack of light in the well the shade of brown might not be discernable. A human in the well with the bear will see the colour of the bear as a low relative concern compared to A) being in a well and B) being in a well with a bear.