ITT: facts that blow your mind
If we had birds similar to horses in pulling power, planes would have been possible before the invention of the internal combustion engine.
you're comparing the wrong values. That bullet value is the kinetic energy when in flight, not the energy achievable when you split its atoms.
Coal might have just as much energy as uranium in this sense btw.
>use the heat of uranium fission to turn water into steam
>use the heat from 50 cal bullets being shot to turn water into steam
energy is energy no matter what form, it can always be transformed into another.