speed
The French word for 'speed' is 'vitesse'. It is used in the same way as in English to describe the rate at which something moves or operates. For example, 'La vitesse de la voiture était de 120 km/h' means 'The speed of the car was 120 km/h'.
I drive at high speed.
This sentence is expressing the speed at which the speaker is driving. In French, 'grande vitesse' means 'high speed.'
The wind speed is important for sailing.
In this context, 'vitesse' is used to denote 'speed' in relation to the wind. It helps to illustrate the importance of wind speed in sailing.
The speed of light is a universal constant.
This phrase talks about the concept of the speed of light in the physical world. In French, 'vitesse' is used here to denote 'speed', relating it to the word 'lumière' which means 'light'.