✅ The verified answer to this question is available below. Our community-reviewed solutions help you understand the material better.
Certa partícula descreve a trajetória em \mathbb{R}^3 definida por
\vec{r}(t)=(-t^2+ t^3)\,\vec{i}+3 t^3\,\vec{j}+t\,\vec{k} onde
t\in\mathbb{R} designa cada instante.