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how many joules? FPS?
if an airsoft gun shoots a .20g pellet at 475 FPS,then how many joules of kinetic energy would be transferred if shot from point blanc?
.27g? FPS?
.30g? FPS?
.35g? FPS?
FYI, i'm considering using . .27g bbs over .25 since i just depleted a 2,000 bottle of bbs,and im pretty new at airsofting, so i want to know the amount of joules and the fps of the bb.
2 Answers
- Vince 505Lv 69 years agoFavorite Answer
Converting FPS to m/s :
1foot = 0.3048 m
475x0.3048 = 144.78 m/s
0.2g = 2 x10^ -4 kg
KE in joules = 1/2 m V^2 = 0.5 x 2 x 10^ -4 x 144.78^2
= 2.096 J
From KE = 1/2 m V^2
V = √(2KE/m)
0.27g pellet : V = √(2KE/m) = √4.192 / 0.00027 = 124.6 m/s = 408.8 FPS
0.30g pellet : V = √(2KE/m) = √4.192 / 0.00030 = 118.2 m/s = 387.8 FPS
0.35g pellet : V = √(2KE/m) = √4.192 / 0.00035 = 109.4 m/s = 359.1 FPS
