If the Displacement of an Object Is Given in SI $\Delta$

question 59

Multiple Choice

If the displacement of an object is given in SI units by $\Delta$ x = -5t + t ², at t = 2 s its velocity and acceleration are, respectively: (Hint: Use dimensional analysis along with the equations for motion with constant acceleration.)

• A) positive, positive.
• B) positive, negative.
• C) negative, negative.
• D) negative, positive.

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Definitions:

Pluripotent Stem

Cells capable of differentiating into almost any other cell type in the body, holding potential for regenerative medicine and developmental biology.

Genetic Identical

Organisms or cells that have exactly the same DNA sequence in all of their genes.

Totipotent

Cells that have the potential to develop into any cell type in an organism, including embryonic and extraembryonic tissues.

Nuclei

Nuclei are the centralized organelles found in eukaryotic cells, containing most of the cell's genetic material (DNA).