Is it correct that a car travels 80 kilometers per minute?

[ElliotMarie]

No. A car cannot travel 80 kilometers per minute. It should be approximately 80 kilometers per hour. Introduction to Speed: Speed is a form of expressing velocity, referring to the total distance an object travels within one hour. The unit of speed is kilometers (km) or miles per hour (mph). Speed is commonly used in the field of transportation, but it is not the standard speed unit in the International System of Units. Calculation of Car Speed: The speedometer uses the measurement signal from the speed sensor to calculate and display the car's speed. When calculating speed, one method involves counting the number of pulses output by the sensor within a fixed time, while another method measures the time taken for a fixed pulse period. The pulse counting method works as follows: when the microprocessor detects an increase in the number of pulses from the sensor signal, it starts counting the pulses representing speed. After detecting the number of pulses over a preset time, the data in the counter is compared with the data in memory. If the difference reaches one kilometer per hour or more, the counter's data is output to the display circuit to refresh the displayed value. This process repeats continuously.