# Position of a ship in a new dimension

## Main Question or Discussion Point

i need some help here, say if there's a ship, no matter how it steers, it will always end up at the starting point, becauses it is in a new dimension, but how do i go about explaining it? thanks!

## Answers and Replies

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how do i use space-time diagram to explain that the displacement is zero?

HallsofIvy
Homework Helper
What do you MEAN by "in a new dimension"?

as in fourth dimension?

HallsofIvy
Homework Helper
Then how does a spaceship "move into the fourth dimension"?

tiny-tim
Homework Helper
Welcome to PF!

how do i use space-time diagram to explain that the displacement is zero?
Hi lovegood! Welcome to PF!

If your fourth dimension is time, then the ship can't return to its starting-point … because, on the space-time diagram, the ship must always be going up.

Or am I misunderstanding you?

Hi lovegood! Welcome to PF!

If your fourth dimension is time, then the ship can't return to its starting-point … because, on the space-time diagram, the ship must always be going up.

Or am I misunderstanding you?
unless its near a naked singularity and in a closed time loop :tongue2:

I am not sure if this answers what you are asking but perhaps your dimension is a point, no matter how you move you are still at the beginning. Or perhaps you are referring to a closed dimension, like the surface of a ball. No matter how you move would can (not will) end up back at the beginning.