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xalmatovr
xalmatovr
22.11.2021 00:04 •  Алгебра

F(x)=x2-6x+5 x2=1 напишите косвенное уравнение

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Ответ:
SiriusSnak
SiriusSnak
22.11.2021

1)  h =13m;     2) t =1+ √1,3+

Объяснение:

h = 18t - 5t²  

вначале  при полете вверх на камень действует сила тяжести, которая снижает его скорость до  полной остановки, а затем он под действием силы тяжести вернется обратно на землю.

1) определим в какой момент времени камень брошенный вверх потеряет скорость (v=0)

v = v0 - gt ;        v0-gt = 0

t = v0/g    время подъема,     t = 10/10 =1 c.

а теперь рассчитаем высоту на которую он поднимется  

h = 18v0/g - 5(v0/g)²         (для удобства расчета примем  g=10)

h = 18*10/10 - 5(10/10)² =18 - 5 =13

h =13 m         t = 1 время подъема

2)теперь определим время возврата мяча на землю под действием силы тяжести.

h = v0t + gt²;   где   v0=0 начальная скорость.  g =10

h = gt²

t² = h/g

t = \sqrt{\frac{13}{10} } =\sqrt{1,3}  время падения

полное время полета с момента запуска

t = t1 + t2 = 1 + √1.3

4,6(61 оценок)
Ответ:
гсооагвгв
гсооагвгв
22.11.2021

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