What is the general acceleration of a car?

[SanJeffrey]

Generally, the normal acceleration a=-6m/s2. Miles per hour (mph): It is a speed measurement unit, representing miles per hour. Commonly used in the UK and Commonwealth countries for calculating speed limits on roads, tennis serve speeds, etc., it is also used to measure the central wind speed of tropical cyclones. Kilometer (km): km is the current measurement unit, while mph is commonly known as "mile." In the early days of the country's founding, miles per hour were mostly used as the counting unit for speed and odometer readings. The driving speed of a car refers to the distance traveled by the car per unit of time, referred to as speed, commonly measured in kilometers per hour or meters per second.