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Gravity and guns
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| if i try to shoot a guy using a rifle with a muzzle velocity of about 950 m/s from a distance of 2 kilometres. if the pull of gravity will pull the projectile down once fired. how high from the target would i have to aim to hit it? |
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Re: Gravity and guns
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by
on 2006-11-05 02:09:00 (edited 2006-11-06 18:19:00)
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traveling at 950 m/s over 2,000 m takes about 2 seconds. a_y = -G = -9.8 m/s^2 v_y = -9.8t m/s d_y = -4.9t^2 m = aim about 19.6 m up 
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Re: Gravity and guns
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Ah, wouldn't that take about 2 seconds to go that far...? 2000m / 950 m/s = approx 2s...? a_y = -9.8m/s^2 v_y = -9.8m/s * t d_y = -4.9m * t^2 = -19.6 m arctan(19.6/2000) = approx .5615 degrees Maybe I got mixed up...
>,>; Did I just say that...?
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Re: Gravity and guns
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by
on 2006-11-06 18:18:25 |
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no, your right, i just fudged the problem. thanks for correcting it! the arctan() is neat, too.
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