Question

qual. energia cinética de um carro com massa1800kg que viaja a 20m/s

Answer 1

$E_{.C}= \dfrac{m\cdot{V^2}}{2}\\\\\\E_{.C}= \dfrac{1800\cdot(20)^2}{2}\\\\\\E_{.c}=900\cdot400\\\\\boxed{E_{.C}=360000\ J}$