* Meters per second squared (m/s²): This is the standard unit in the International System of Units (SI).
* Feet per second squared (ft/s²): This is commonly used in the United States.
* Kilometers per hour squared (km/h²): This is sometimes used for road vehicles.
The key thing to remember is that acceleration measures how quickly velocity changes over time. Velocity is measured in units of distance per unit time (like meters per second or miles per hour), so acceleration is measured in units of those units per unit time.
