On the Earth, the acceleration rate of a free-falling body is 9.8 metres per second squared. This means that for each second the body is falling, its velocity increases by 9.8 metres per second, up to a limiting velocity of approximately 125 miles per hour (56ms^-1)

So to find out how much damage Bruce will sustain, we first have to know how far he falls.

By looking at the film shot by shot, we estimate that he falls about 35 floors. If we assume each floor is about 3m, then he falls 35 x 3 = 105m

How fast is he travelling when the fire hose runs out? His final speed will be given by his initial speed, added to his acceleration due to the Earth’s pull (gravity), multiplied by the time taken to fall such a distance.

So how long does he take to fall?