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Verified answer
RespuestaMasa = 1200 kg
v^2 = v * v
Ec = (m * v^2) / 2
m = ( 2 * Ec) / v^2
m = ( 2 * 21600 j) / (6 m/s)^2
m = (43200 j) / 36 m^2/s^2
m = 1200 kg
Solución
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