Far less as it happens. Again the rocket equation takes no prisoners.But it needs at least the same amount of fuel (as well as years, decades, centuries...........) to slow down for its destination![]()
You start with your payload, then work out how fast you want it to go. Then you work out how much fuel you need to decelerate from that speed.
Then you take that total mass and work out how much fuel is needed to boost that to the cruising speed. With speeds as high as we're taking about the payloads are rounding errors. Nearly all the energy is needed to move the fuel.
