SI units:
* Meters per second (m/s): This is the standard unit in the International System of Units.
* Kilometers per hour (km/h): This unit is commonly used for expressing the speed of vehicles.
Other units:
* Feet per second (ft/s): This unit is used in the imperial system.
* Miles per hour (mph): This unit is commonly used in the United States for expressing the speed of vehicles.
* Knots (kn): This unit is used for expressing the speed of ships and aircraft. It is equal to one nautical mile per hour.
Note: When expressing velocity, it's important to include both the magnitude and direction. For example, you could say "the car is traveling at 60 km/h to the north."
