Falling speed
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    Falling speed

    I hope this doesn't sound silly.

    In game terms, is basic falling speed covered anywhere? I know feather fall slows you to the safe speed of 60 feet per round, but I have not been able to locate base falling speed.

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    The rules don't have any guidelines on it, but you have two other sources, Rules of the Game:
    Quote Originally Posted by Rules of the Game
    A stalling creature falls, but it wings provide considerable drag and tend to slow the creature's fall. As noted earlier, a creature falls 150 feet during the first round spent stalling, and it falls 300 feet each round thereafter. Wingless flyers that stall still have some residual lift and fall more slowly than non-flyers.
    A nonflyer (or flyer falling through the air) freefalls rather than stalls. A creature in freefall drops 500 feet the first round and 1,000 feet each round thereafter.
    And the 3.5 Main FAQ:
    Quote Originally Posted by 3.5 Main FAQ
    How far does a character fall in a single round? If my griffon-riding character falls off his mount 300 feet up, how long do other characters have to catch him?

    This ends up being both a rules and a physics question. The short answer is, “In a single round, you fall far enough to hit the ground in the vast majority circumstances that come up in the game.”

    Here’s the long answer: A falling character accelerates at a rate of 32 feet per second per second. What that means is that every second, a character’s “falling speed” increases by 32 feet. The distance he falls in that second is equal to the average of his falling speeds at the beginning of that second and at the end of that second. Thus, during the first second he falls 16 feet (the average of 0 feet and 32 feet, which are his speeds at the start and end of that second). During the next second he falls 48 feet (the average of 32 feet and 64 feet). He falls 80 feet during the third second, 112 feet the fourth second, 144 feet the fifth second, and 176 feet the sixth second. That’s a grand total of 576 feet fallen in the first round alone, hence the short answer given above—the number of falls occurring in any campaign longer than this is probably pretty small. For ease of play, you could simply use 500 feet as a nice round number—it’s easier to remember.

    Of course, the character falls even farther the next round, although acceleration soon ends due to the resistance of air on the falling body (this is what’s called terminal velocity). If the Sage remembers his high-school physics, terminal velocity for a human body is roughly 120 mph (equivalent to a speed of 1,200 feet per round, or 200 feet per second); thus, the character’s falling speed hits its maximum in the first second of the second round. It’s safe to say that after 2 rounds the character will have fallen nearly 2,000 feet, and will fall another 1,200 feet per round thereafter.

    In the example you give, other characters would clearly have no more than a round to react, and it’s possible they’d have even less time. Remember that despite the sequential nature of D&D combat actions, things are happening very quickly—virtually simultaneously, in many cases. As a DM, I’d probably allow every character a chance to react to a long fall (such as the one you describe), as long as their action occurs before 1 full round has passed from the start of the fall. (As a side note, that’s why feather fall allows its caster to cast it even when it isn’t her turn—otherwise, adjudicating its timing would be a nightmare.) The difference between “you watch the character fall all the way to the ground before you can react” and “the character starts to fall, what do you do?” is really just up to the DM’s sense of fun and fair play. Off the top of my head, I’d say that anything up to 50 or 60 feet is clearly too fast to react to (barring a readied action, of course), and anything that approaches 250 feet or more should probably allow characters some chance to react, but that’s purely a personal opinion.

    Whatever decision you make, try to make the same decision every time, so that players know what to expect. If this situation comes up a lot in your game, it’s probably worth creating a house rule so you don’t have to try to remember what you did last time. (If your campaign routinely features 300-foot falls, your characters might want to invest in some rings of feather falling!) Now, if you start altering certain assumptions—such as the force of gravity, or the density of air that’s resisting the falling character, or even the mass of the falling character—these calculations become less useful. Yet, unless your numbers are much different than the standard values, you can still use these as benchmarks.

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