Question

Is the acceleration of a car greater than the accelerator is pushed to the floor or when brake pedal is
pushed hard?

Answer 1

the steering column location and the master cylinder locations. and things have to be abe to withstand a lot of force.If you look at cars over the years you'll see all kinds of different setups.  Antique vehicles sometimes had the brake master cylinder under the floor, so the brake lever was curved down, and you pushed it into the floor..............

Answer 2

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Acceleration of a car is greater when braken pedal is pushed hard, because car suddenly comes to rest, i.e. the rate if change of velocity of car is large.