5mph, which is a nice slow walk.
sorry to knit pick but 5mph is not quite a slow walk, jogging speed actually. Gives you a 5 and quarter hour marathon time.
III wrote:i'll still stand by the "bigger and faster things have the responnsibility" thing, at least until they decide to do away with the dmv and go to free for all mode.
Captain Goddammit wrote:Damn, the only problem I have driving a large mutant at night is the usually-high-on-something fellow Burners (O.K., assholes) that run out in front of me on purpose for the thrill of it. Sometimes I really really WANT to run them over, but who knows what's in their pockets? Might get a flat.
Of course everyone knows I wouldn't actually do that...
Alpha wrote:I'd rather catch the baseball, but it has nothing to do with acceleration.
The issue with art cars traveling at any speed is MOMENTUM: p = mv. An 3,000 pound art car traveling 5mph still has much more momentum than, say, a Burner on a bike. This means that when they impact, the Burner goes *bounce* instead of the art car.
Stuart's formula was correct, but only applies to objects either accelerating or decelerating. The baseball and the bullet, as you defined them, are moving at constant velocity. Both have the same momentum, 6.2 kg-m/s. The reason you don't want to catch the bullet has to do with surface area -- the force of rapid deceleration due to contact with your hand, can either be distributed over the entire palm (baseball) or about few square centimeters (bullet). The smaller surface area allows the force of the bullet to break the skin.
Sorry, that touched my physics nerve.
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