I'm uncertain about what you are seeking here. The change in an objects speed divided by the time required to change the speed would be the average acceleration.
The speed skates have longer blades
Differences in speed and pitch.
The movement of material due to differences in density caused by differences in temperature is called convection.
The speed at a given point is called instantaneous speed. It represents the speed of an object at a specific moment in time.
The two main factors that cause differences in wind speed are the pressure gradient and the Earth's rotation. The pressure gradient is the difference in air pressure between two points, which drives the movement of air. The Earth's rotation also influences wind speed through the Coriolis effect, which deflects air to the right in the Northern Hemisphere and to the left in the Southern Hemisphere, creating wind patterns.
Generally, gender does not directly affect speed. Factors such as muscle mass, technique, training, and genetics are more influential in determining an individual's speed. However, in certain sports, there may be slight differences in average speed between genders due to physiological differences.
That phenomenon is called dispersion, which occurs when white light is separated into its component colors as it passes through a medium like water due to differences in the speed of light for each color.
their speed is fast
Speed.
contrasting
It is called tolerance
No differences, they mean the same.