Question

Calcule a energia cinética de uma bola de massa 0,12 kg ao ser arremessada e atingir uma velocidade de 34 m/s.

Answer 1

$Dados:\left \{ {{v=34} \atop {m=0,12}} \right. \\\\\\Resposta:\\\\Ec=\frac{m.v^{2}}{2} \\\\Ec=\frac{0,12.34^{2}}{2} \\\\Ec=\frac{0,12.1156}{2} \\\\Ec=\frac{138,72}{2} \\\\Ec=69,36\\\\Espero\ que\ tenho\ lhe\ ajudado\ e\ bom\ estudos!!\ \ \ \ :)$

Answer 2

$\Large\displaystyle\text{ \begin{gathered} \hookrightarrow\boxed{\boxed{\bf{ E_c= 69,36~J }}} \end{gathered} }$

• Explicação:

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

$\Large\displaystyle\text{ \begin{gathered} \sf{E_c = \dfrac{0,12 \cdot34 {}^{2} }{2} } \end{gathered} }$

$\Large\displaystyle\text{ \begin{gathered} \sf{E_c = \dfrac{0,12 \cdot1156}{2} } \end{gathered} }$

$\Large\displaystyle\text{ \begin{gathered} \sf{E_c = \dfrac{138,72}{2} } \end{gathered} }$

$\Large\displaystyle\text{ \begin{gathered} \boxed{\boxed{\sf{E_c =69,36 \: J }}} \end{gathered} }$