Anime: Railgun

[roguebfl]

Originally Posted by Anthony

There's a fair amount of bad physics in A Certain Scientific Railgun (for example, a coin at 1024 m/s is actually rather underwhelming),

why? bullets 400–475 m/s, with a bullet weight of ~16–22 grams

of course the heaviest Japanese coin is 500yen Nickel-brass Coin

Material : Cu72%, Zn20%, Ni8%
Diameter : 26.5mm Weight : 7.0g
Edge : Milled
Year of First Issue : 2000

the lightest 1yen Aluminum Coin

Material: Al100%
Diameter: 20.0mm Weight: 1.0g
Edge: Smooth
Year of First Issue: 1955

however speed has a bigger impact the mass.