Question

Determine a energia cinética de uma bola de massa 6 kg ao ser arremessada e atingir uma velocidade de 5 m/s.

Answer 1

Resposta:

$75J$

Explicação:

$Ec=\frac{mv^{2} }{2} \\Ec=\frac{6.(5)^{2} }{2} \\Ec=\frac{6.25}{2} \\Ec=\frac{150}{2} \\Ec=75J$

Onde,

Ec = Energia cinética (J)

m = massa (kg)

v = velocidade (m/s)

Answer 2

$\Large\displaystyle\text{ \begin{gathered} \hookrightarrow\boxed{\boxed{\bf{ E_C= 75~J }}} \end{gathered} }$

• Explicação:

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

$\Large\displaystyle\text{ \begin{gathered} \sf{E_C = \dfrac{6 \cdot5 {}^{2} }{2} } \end{gathered} }$

$\Large\displaystyle\text{ \begin{gathered} \sf{E_C = \dfrac{6 \cdot25}{2} } \end{gathered} }$

$\Large\displaystyle\text{ \begin{gathered} \sf{E_C = \dfrac{150}{2} } \end{gathered} }$

$\Large\displaystyle\text{ \begin{gathered} \boxed{\boxed{\sf{E_C =75 \: J }}} \end{gathered} }$