Uh, no again. Never seen a coal train stop in a few seconds. Those locomotives use dynamic braking, and they dissipate heat through massive fan cooled power resistors for minutes on end. Even at the lumber mill level, servo trays running 100hp cutting motors across the planks easily stress resistors near continuously.
***So, you expect every engineer to know trains just because you do? So, these trains carry coal in buckets so we’re expected to do Joules/bucket or somesuch ridiculous unit conversions in our head just because you’re a Freeping train nerd?
For a train driver, he has to do the lookup or the calculation, based on his tonnage.
An engineer came up with the formula or the lookup table. Go figure, your just too ignorant to realize it. After all, the kinetic *energy* stored in the train is the most important part, and all energy can be expressed as Joules.
It can’t be expressed as Watts, since that is power, not energy.