Предмет: Физика, автор: deadded228

даю 30 баллов
Тело брошено под углом 45 к горизонту с начальной скоростью 50 м/с. Точка старта и точка падения находятся на одном уровне. Выберите верные утверждения:

Выберите один или несколько ответов:
a. Ускорение тела в верхней точке траектории равно 8,51 м/с2
b. Общее время полёта равно 3,6 с
c. Общее время полёта равно 7,2 с
d. Максимальная высота подъёма равна ≈127,4 м
e. Общее время полёта равно 14,4 с
f. Максимальная высота подъёма равна ≈ 63,8 м

g. Максимальная высота подъёма равна ≈45,6 м

h. Ускорение тела на старте равно 8,51 м/с2


GluV: Тело брошено на Земле или другой планете ? Под углом 45 градусов ?
deadded228: земля
deadded228: да угол 45 гр

Ответы

Автор ответа: GluV
0

Ответ:

c) f)

Объяснение:

Время подъема на максимальную высоту равно t=\frac{50}{\sqrt{2}*9.8 } =3.6

Общее время полета 2*t=7.2 c

Максимальная высота подъема t*(\frac{50}{\sqrt{2} } -\frac{9.8*t}{2} )≈63.8 м

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'Oh, hello, darling. I was just ringing to see what you __3___ (want) for Christmas.'
'Christmas?,
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