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Donde:
Ek = Energía Cinética.
m = masa (kg)
v = velocidad (m/s)
Datos:
Ek = ???
m = 1200 kg
v = 200 km/h --> a m/s -->55.6 m/s
Reemplazamos:
Ek = 1/2 (1200 kg)*(55.6 m/s)²
Ek = 1/2 ( 1200 kg * 3091 m² /s²)
Ek = 1/2 (3 709 200 J)
Ek = 1 854 600 J --> (1854.6 kJ)
Respuesta: 1 854 600 J