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v = 25 km/s
m = 1400 kg
Ec = ?
Primero pasas la velocidad de km/s a m/s
25 km/s (1000 m / 1 km) = 25000 m/s
Calculamos la energía cinética.
Ec = 1/2 (m) (v)²
Ec = 1/2 (1400 kg) (25000 m/s)
Ec = 700 kg (625000000 m²/s²)
Ec = 437500000000 Joules----------Respuesta