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To: balch3
A VW masses about 2000 lbs, that projectile looks to be maybe 20 lbs, probably less.

The kinetic energy is Mass * Velocity * Velocity / 2.

Mp * Vp * Vp/2 = 32 * Mvw * Vvw * Vvw/2.

solving for Vp yields

Vp=100 Mph * sqrt(32* 2000/20) ~= 5657 mph ~= 8300 feet/second.

No wonder it smokes.

(Yes I know pounds is not a mass unit, but since only the ratio counts it doesn't matter what units are used, as long as they are the same for both masses)

44 posted on 02/28/2012 10:12:17 PM PST by El Gato ("The second amendment is the reset button of the US constitution"-Doug McKay)
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To: El Gato

I’ll wait for the laser version, thank you.


47 posted on 02/28/2012 10:29:13 PM PST by FedsRStealingOurCountryFromUs
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