The Velocity of an Object as a Function of Time

question 31

Multiple Choice

The velocity of an object as a function of time is given by v = (12.5t − 7.2t²) + (4.3t³) .What is its acceleration as a function of time?

• A)a = (12.5 − 14.4t) + (12.9t²)
• B)a = (−7.2) + (4.3t)
• C)a = (5.3t) + (12.9t²)
• D)a = (−7.2) + (8.6t)
• E)a = (−14.4t) + (4.3t²)

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Definitions:

Filtrate Osmolality

Filtrate osmolality refers to the concentration of solutes in the fluid that is filtered through the body's cells or organs, important in the regulation of water and solute balance.

Loop of Henle

A section of the nephron in the kidney which plays a crucial role in the concentration of urine.

Solute Concentration

The measure of the amount of solute dissolved in a solvent or solution.

Kidney Medulla

The kidney medulla is the innermost part of the kidney, composed of renal pyramids, and is responsible for concentrating urine and maintaining water and salt balance in the body.