what is velocity
http://library.thinkquest.org/10796/ch2/ch2.htm
what is an ion
http://dictionary.reference.com/browse/ion
Velocity is a physical quantity that describes the rate at which an object changes its position. It refers to both the speed and the direction in which an object is moving. In physics, velocity is defined as the displacement (change in position) of an object divided by the time it takes for that displacement to occur.
To calculate velocity, you need to determine the change in position and the time interval it took for that change to happen. The formula to calculate velocity is:
Velocity = Displacement / Time
Where:
- Velocity is measured in meters per second (m/s) or another unit of length divided by time.
- Displacement is the change in position, measured in meters (m) or another unit of length.
- Time is the duration of the change, measured in seconds (s) or another unit of time.
For example, if an object moves from point A to point B with a displacement of 10 meters, and it takes 2 seconds to do so, the velocity would be 5 meters per second:
Velocity = 10 meters / 2 seconds
Velocity = 5 meters per second
Remember that velocity includes information about both speed and direction. If an object moves in a straight line without changing direction, its velocity will be positive if it moves in one direction and negative if it moves in the opposite direction.