Mathematics, 05.05.2020 08:59 Mimix2k

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Un objeto se lanza a 14.7 metros por segundo (m/s) desde una plataforma de 49 metros de altura. La ecuación para la altura del objeto, d, t segundos después del lanzamiento es d(t) a -4.9t2 + 14.7t + 49, donde d está en metros. ¿Cuánto tiempo, en segundos, tarda el objeto en golpear el suelo?

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