What is the change in velocity in the above question?

What is the rate of change of velocity called?

In above question, what is the mean velocity of the point ?

a) Give the relation between change in enthalpy and change in free energy. b) Name the above relation. c) What is the significance of the above relation?

In the pervious question ,what is the average velocity of the particle?

In the above problem, the change in velocity cfter covering an angle of 90^(@) will be

What are the dimensions of the change in velocity ?