Mathematics

Problem

The second derivative of a particle’s position is

s''(t)

, and its units are feet per second squared (ft/s

^{2}

). The independent variable

t

is measured in seconds. Which of the following units is most consistent for the position function

s(t)

? a)

\text{ft}/\text{s}

\text{ft}

\text{ft}/\text{s}^{3}

\text{ft}\,\text{s}^{2}