Answer:
324,000 joules.
Step-by-step explanation:
KE = 0.5 * mass * velocity^2
KE = 0.5 * 45 kg * (120 m/s)^2
KE = 0.5 * 45 kg * 14400 m^2/s^2
KE = 324000 joules
generators convert the kinetic energy into electrical power
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