Sebuah kelereng yang massanya 10 g mula-mula diam, kemudian bergerak dengan kecepatan 5 m/s. energi kinetik yang kelereng yang sedang bergerak ... Joule *
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Jawaban:
[tex]EK = \frac{1}{8}J = 0,125J[/tex]
Penjelasan:
[tex]Dik:\\m = 10g = 0,01kg\\v_0 = 0m/s\\v_t = 5m/s\\\\Dit: EK = ?\\\\Jawab:\\EK = \frac{1}{2}mv^{2}\\\\EK = \frac{1}{2}mv_t^{2}\\\\EK = \frac{1}{2}(0,01kg)(5m/s)^{2}\\\\EK = \frac{1}{2}(\frac{1}{100}kg)(25m^{2}/s^{2})\\\\EK = \frac{1}{2}(\frac{25}{100})kg.m^{2}/s^{2}\\\\EK = \frac{1}{2}(\frac{1}{4})kg.m^{2}/s^{2}\\\\EK = \frac{1}{8}kg.m^{2}/s^{2}\\\\EK = \frac{1}{8}J = 0,125J[/tex]
