Question

calcule a energia cinética de uma bola de massa de 4kg ao ser arremessada a uma velocidade de 26 m/s​

Answer 1

$Dados \left \{ {{m=4 kg} \atop {V=26 m/s}} \right. \\\\\\Resposta:\\\\Ce=\frac{mv^{2} }{2} \\\\Ce=\frac{4.26^{2} }{2} \\\\Ce=\frac{4.676}{2} \\\\Ce=\frac{2704}{2} \\\\Ce=1352$

Answer 2

$\Large\displaystyle\text{ \begin{gathered} \hookrightarrow\boxed{\boxed{\bf{ E_C= 1352~J }}} \end{gathered} }$

• Explicação:

$\Large\displaystyle\text{ \begin{gathered} \sf{E_C = \dfrac{m \cdot{v} {}^{2} }{2} } \end{gathered} }$

$\Large\displaystyle\text{ \begin{gathered} \sf{E_C = \dfrac{4 \cdot26 {}^{2} }{2} } \end{gathered} }$

$\Large\displaystyle\text{ \begin{gathered} \sf{E_C = \dfrac{4 \cdot676}{2} } \end{gathered} }$

$\Large\displaystyle\text{ \begin{gathered} \sf{E_C = \dfrac{2704}{2} } \end{gathered} }$

$\Large\displaystyle\text{ \begin{gathered} \boxed{\boxed{\sf{E_C =1352 \: J }}} \end{gathered} }$