Speed Values (GCSE Physics)
Speed Values
The Speed of Wind and Sound
Speed of Sound
The speed of sound in air is usually 330m/s.
Although the standard speed of sound in air is 330m/s, it can vary. These changes in speed occur when sound waves pass through objects of different densities. The more dense the object, the slower the sound will travel.
Speed of Wind
Similarly, the speed of wind can also vary. When wind passes over or around certain objects, such as trees, it can experience some friction. This friction will lead to turbulence in the air, which in turn changes the speed of the wind. The temperature and the pressure of the air can also affect wind speed.
Speeds of Activity
For exams, we need to know a few ‘typical’ values for different everyday activities and transport values.
Still got a question? Leave a comment
Leave a comment