1. Английский язык
  2. 20.Тело подброшено вертикально

20.Тело подброшено вертикально вверх. Высота тела (в метрах) в момент времени (в секундах) описывается формулой h(t)=-2(t+2)(t-3). С какой высоты запущено тело? Через сколько секунд после запуска тело упадет на землю?​

andrwy1229 andrwy1229    2   26.02.2021 09:16    0

Ответы
Marinet1806 Marinet1806  26.02.2021 09:20

h(t) = - 2(t + 1)(t - 4)

1) t = 1

h(1) = - 2(1 + 1)(1 - 4) = - 2 * 2 * (- 3) = 12 м

2) Тело упало на землю значит h(t) = 0

- 2(t + 1)(t - 4) = 0

t² - 4t + t - 4 = 0

t² - 3t - 4 = 0

t = 4

Объяснение:

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