A student is given a position function $x\left(t\right)$ and wants to obtain the acceleration function $a\left(t\right)$. Which operation sequence is correct?

• A. Integrate $x\left(t\right)$ twice with respect to $t$
• B. Differentiate $x\left(t\right)$ twice with respect to $t$
• C. Integrate $x\left(t\right)$ once and then differentiate once
• D. Differentiate $x\left(t\right)$ once and then integrate once

Answer: (B)