velocity
part of speech
noun (velocity, velocities)
meaning for a pupil
1) Velocity is speed in a particular direction. tree →
2) In everyday use, velocity means speed, especially high speed. tree →
sense in the lessons
In science and maths lessons, speed tells how fast something goes; velocity tells how fast and which way. Velocity is measured in metres per second (m/s). If you run round a track at the same speed, your velocity keeps changing because your direction changes. Escape velocity is the speed a rocket needs to leave Earth's pull.
examples
- The ball left the bat at a high velocity. tree →
- Velocity is speed in a given direction. tree →
- A rocket needs a huge velocity to escape Earth. tree →
- The river's velocity was faster in the middle. tree →
- We measured the velocity of the toy car in metres per second. tree →
- Wind velocity was 50 kilometres per hour from the north. tree →
note
Mostly uncountable; plural velocities in science. In maths problems, velocity = distance (displacement) divided by time; a negative velocity means moving the opposite way. Speed has no direction; velocity does.
Trees and pragmatics
Every meaning and example of «velocity» parsed by Mova, each sentence with its dependency tree and frames.