The internationally recognized symbol for speed is typically represented by the lowercase letter "v" or sometimes by the magnitude of velocity denoted as "│v│" or "|v|". The symbol "s" is generally not used to represent speed in scientific or mathematical contexts. Speed refers to the scalar quantity that represents the magnitude of the velocity, without considering the direction.
On the other hand, velocity is a vector quantity that includes both the magnitude and direction of motion. The symbol "v" is commonly used to represent velocity, and it is understood to include the direction. However, to explicitly indicate the vector nature of velocity, an arrow or a boldface "v" (v) is often used, such as "→v" or "?" (boldface v).
To summarize:
- Speed: v, │v│ or |v|
- Velocity: v, →v or ? (boldface v)
These symbols are widely used in scientific and mathematical disciplines to represent speed and velocity, respectively. It's important to note that conventions may vary slightly depending on the context or specific field of study, but the usage described above is generally accepted and understood internationally.