Alguém pode me responder..
A energia cinética de um móvel de 12 kg é 96j calcule a velocidade que ele adquiri nesse instante
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Olá !
Calculando a velocidade ...
![\mathsf{E_{C}=\dfrac{MV^{2}}{2}} \\\\\\ \mathsf{96=\dfrac{12\cdot~V^{2}}{2}} \\\\\\ \mathsf{12\cdot~V^{2}=96\cdot2} \\\\\\ \mathsf{12\cdot~V^{2}=192} \\\\\\ \mathsf{V^{2}=\dfrac{192}{12}} \\\\\\ \mathsf{V^{2}=16} \\\\\\ \mathsf{V=\sqrt{16}} \\\\\\ \boxed{\mathsf{V=4~~m/s}} \mathsf{E_{C}=\dfrac{MV^{2}}{2}} \\\\\\ \mathsf{96=\dfrac{12\cdot~V^{2}}{2}} \\\\\\ \mathsf{12\cdot~V^{2}=96\cdot2} \\\\\\ \mathsf{12\cdot~V^{2}=192} \\\\\\ \mathsf{V^{2}=\dfrac{192}{12}} \\\\\\ \mathsf{V^{2}=16} \\\\\\ \mathsf{V=\sqrt{16}} \\\\\\ \boxed{\mathsf{V=4~~m/s}}](https://tex.z-dn.net/?f=%5Cmathsf%7BE_%7BC%7D%3D%5Cdfrac%7BMV%5E%7B2%7D%7D%7B2%7D%7D+%5C%5C%5C%5C%5C%5C+%5Cmathsf%7B96%3D%5Cdfrac%7B12%5Ccdot%7EV%5E%7B2%7D%7D%7B2%7D%7D+%5C%5C%5C%5C%5C%5C+%5Cmathsf%7B12%5Ccdot%7EV%5E%7B2%7D%3D96%5Ccdot2%7D+%5C%5C%5C%5C%5C%5C+%5Cmathsf%7B12%5Ccdot%7EV%5E%7B2%7D%3D192%7D+%5C%5C%5C%5C%5C%5C+%5Cmathsf%7BV%5E%7B2%7D%3D%5Cdfrac%7B192%7D%7B12%7D%7D+%5C%5C%5C%5C%5C%5C+%5Cmathsf%7BV%5E%7B2%7D%3D16%7D+%5C%5C%5C%5C%5C%5C+%5Cmathsf%7BV%3D%5Csqrt%7B16%7D%7D+%5C%5C%5C%5C%5C%5C+%5Cboxed%7B%5Cmathsf%7BV%3D4%7E%7Em%2Fs%7D%7D)
Portanto , a velocidade será 4 m/s.
Calculando a velocidade ...
Portanto , a velocidade será 4 m/s.
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