un automóvil de 1300 kg viaja a 80 km/h que energía cinética tiene?
Por favor ayúdenme
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Respuesta:
Primero pasamos de km/h a m/s
80km/h (1h/3600s) (1000m/1km) = 80000m/3600s = 22.22m/s
Ec = 1/2 * m * v²
Ec = 1/2 (120kg) (22,22m/s)²
Ec = 0.5 (120kg) (493.7m²/s²)
Ec = 296220 J