Speed in wall mode

I have Samsung Galaxy S7. With the new mly upgrade it finally shoots two pictures a second, which opens new possibilities, such as sideways shooting.

Is my calculus right ?
My angle of view is 50 degrees.
I shoot two pictures per second.
I need an overlap of 33 % to get pictures connected in mly.

So my speed should not exceed 3 multiplied by 0.46 times the distance to the wall (= the scene).

I know that speed and distance have not the same dimension, which is why I do not thrust my trigonometry.

Or just redo the way/street/track in same angle and get some overlap in this way.