1. Let's clarify the problem: You want to understand why the velocity function $v(t)$ is not considered explicitly simple. 2. In calculus and physics, a function is "explicitly simple" if it can be written directly in terms of the independent variable (here, $t$) without involving other functions or implicit relations. 3. Sometimes, $v(t)$ might be given implicitly, for example, as a solution to a differential equation or involving integrals or other functions that depend on $t$ indirectly. 4. To determine if $v(t)$ is explicitly simple, check if it is expressed as a straightforward formula like $v(t) = 3t^2 + 2t + 1$. 5. If instead $v(t)$ is defined through an integral, differential equation, or as an inverse function, it is not explicitly simple because you cannot write it as a direct formula in $t$. 6. Understanding this distinction helps in solving problems because explicit functions are easier to differentiate, integrate, and analyze. 7. If you provide the exact form of $v(t)$ you are referring to, I can help explain why it is or isn't explicitly simple in that context.