Question

What is called velocity? ​

Answer 1

Answer:

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In physiology, a stimulus is a detectable change in the physical or chemical structure of an organism's internal or external environment. The ability of an organism or organ to detect external stimuli, so that an appropriate reaction can be made, is called sensitivity. 

Answer 2

VELOCITY

• Velocity is a vector quantity that refers to the rate at which an object changes its position. It is a vector expression of the displacement that an object or particle undergoes with respect to time.
• The SI unit of velocity is meter/second.