A query on physics update and rendering

Hello All,

I have a query related to time step in physics smulation.

As far as I understand in every game there is a renderer working under the surface which renders the objects of our game to screen.

And it does so at rate of FPS ie FPS times per second renderer performs this rendering task.

My question is that if only after a duration 1/FPS seconds renderer needs to know what are the physical properties of objects like position,velocity,acceleration etc then why do we need to do the physics update before this duration as those updates are anyways not going to be shown by the renderer on the screen?


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