Question

um móvel realiza um movimento desaceleração constante de 3m/s2.Sabendo que sua velocidade era inicialmente 30m/s. Determine o tempo

Answer 1

$\boxed{\begin{array}{l}\huge\boxed{\boxed{\boxed{\boxed{\rm{a=\dfrac{\Delta V}{\Delta t}}}}}}\\\Large\displaystyle\begin{gathered}\rm -3=\dfrac{0-30}{t}\end{gathered}\\\Large\displaystyle\begin{gathered} \rm-3t=-30\end{gathered}\\\Large\displaystyle\begin{gathered}\rm t=10\,s~\checkmark\end{gathered}\end{array}}$