Final answer:
The incremental steps between each line of k-space determine the acceleration.
Step-by-step explanation:
The incremental steps between each line of k-space determine the acceleration. In physics, k-space refers to a mathematical space that is used to represent the frequencies and phases of a signal. Incremental steps in k-space correspond to changes in the parameters of the signal. By analyzing these steps, we can determine the acceleration, which represents the rate at which the signal is changing over time.