Does a car have negative acceleration when it is entering a garage?

Answer 1

Many factors are in play - a major factor is in how fast do we approach this garage? Unless otherwise noted by manufacture that sensor / crash detection is in effect that would provide automatic braking, releasing the gas pedal will cause negative acceleration to a point - basically engine braking - however at low speeds the amount of engine braking is minimum to the point of idle speed at which the vehicle will roll in reverse or forward (typically - some models vary) at it's given idle speed...