Comment on Seconds
0x0@programming.dev 2 weeks ago
Shouldn’t m = F/a so n/s^2?
E=mc^2 so m is joule seconds^2 / meter ^ 2
F=ma so m is Newton seconds^2 / meter
A joule is 1 Newton / meter so they agree
A joule is 1 Newton / second, but those units do still agree
A J = Ns not N/s
One Joule of energy is one Newton of force applied for 1 second.
Muphry’s law at work - for both of us, actually. I looked it up (since with Ns the units no longer worked out between E = mc² and F = ma), and a joule is actually a Nm, a Newton-meter. And with that the units do work out correctly on both equations.
Lol wait is a joule actually one Newton meter? 😅
Now I’m so confused
You’ve got it - it is a Newton-meter
mvirts@lemmy.world 2 weeks ago
E=mc^2 so m is joule seconds^2 / meter ^ 2
F=ma so m is Newton seconds^2 / meter
A joule is 1 Newton / meter so they agree
zkfcfbzr@lemmy.world 2 weeks ago
A joule is 1 Newton / second, but those units do still agree
absGeekNZ@lemmy.nz 2 weeks ago
A J = Ns not N/s
One Joule of energy is one Newton of force applied for 1 second.
zkfcfbzr@lemmy.world 2 weeks ago
Muphry’s law at work - for both of us, actually. I looked it up (since with Ns the units no longer worked out between E = mc² and F = ma), and a joule is actually a Nm, a Newton-meter. And with that the units do work out correctly on both equations.
mvirts@lemmy.world 2 weeks ago
Lol wait is a joule actually one Newton meter? 😅
Now I’m so confused
zkfcfbzr@lemmy.world 2 weeks ago
You’ve got it - it is a Newton-meter