Can the Number of Collision between A and B be negative?
Yes, the Number of Collision between A and B, measured in Collision Frequency can be negative.
What unit is used to measure Number of Collision between A and B?
Number of Collision between A and B is usually measured using the Collisions per Cubic Meter per Second[1/(m³*s)] for Collision Frequency. Collisions per Cubic Meter per Minute[1/(m³*s)] are the few other units in which Number of Collision between A and B can be measured.