According to the original trajectory.
Newton had no doubt whatsoever about the result of this experiment, and thus proposed the concept of absolute space and time—which later became the biggest stain for internet trolls to attack him with.
As for what happened afterward, I suppose everyone already knows.
Einstein put forward the theory of relativity, believing that space and time are one entity, inseparable from each other.
In Einstein's view of space-time,
everything moves through space-time at the same speed—that is, the speed of light.
If you move faster in space, you move slower in time, so the total "speed" forever remains the speed of light.
The structure of space-time is the gravitational field; the two are inextricably linked, and also inseparable from the material field.
Space tells matter how to move, matter tells space how to curve.
If we compare from a mathematical perspective, Newton's view of space-time is clearly R^3xR.
