Time in physics is similar to the number of a frame in video. For example, from two frames of a video of a thrown ball one can deduce the its whole trajectory.

Time in physics is similar to the number of a frame in video. For example, from two frames of a video of a thrown ball one can deduce the its whole trajectory. But it does now explain why when we see the video we see ball's movement. In a sense from a physical point of view the whole trajectory exists at once, there is nothing special about a particular point of a trajectory. There is no now. Now back to the freedom of will. Its feeling originates in now as if it exists, it is about changing the future following the now. But since the notion of now is not reflected in physical equations, those cannot describe the freedom of will. In physics the whole timeline exists at the same time. In other words time is static and future has already happen. Thus there is literally no choice in physics.