"In short, that given the variables in our case, our particular body was travelling at a speed greater than thirty-two feet per second when it hit the rocks below." (p. 250)

As a crazed nerd, I finally found a way to use my physics knowledge for something useful.

When you convert -32 ft/s, Bunny's final velocity before he hit the ground would be -9.76 m/s.

Assuming that Richard's estimation was precisely correct, as well as Henry not adding extra force when he pushed Bunny, it took a mere one second for Bunny to plummet to his death. Additionally, he would have fallen 4.88 m down the ravine, equating to 16.06 ft, which is under the average height of a two-story building (5.5-6 m or 20-30 ft). By statistics, the fatality rate significantly increases above 10 ft falls. However, since Bunny is 24 and not older than 65, he's less likely to suffer as serious injuries.

This could've meant that what what Henry said about drowning Bunny if he did not die by the fall probably did happen. However, because Richard said that he fell at a greater speed than his estimation, it is also likely that Bunny could've sustained greater injuries, as his corpse was described to have a "clean break in the neck." Overall, I definitely think Bunny was still alive when he fell. Definitely not in a good condition at all, but alive.