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How fast will 1g get you there?

1.75 hours to the moon! 

The concept of 1 g acceleration providing a comfortable environment for travel is enticing. But even if you have the energy it’s not so clear where you get the propellant throw mass.

Assuming acceleration is constant, d=(1/2)at2


. So plotted over time, distance traveled is a nice parabola.

If you want the time it’d take for a specific distance, it’s easy to manipulate





If you’re using meters and seconds as your units, a=9.8meters/sec2


To travel half the distance to the moon would take about 1.75 hours. The other half distance spent decelerating would take the same amount of time.

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