silviya
?>

Много ! длина полета и высота броска тела, брошенного горизонтально со скоростью 10м/с, равны. с какой высоты брошено тело?

Физика

Ответы

sapelnikovk-74

Дальность полета- движение оавномерное

S=vo×t

Высота бросания- движение оавноускоренное

Н=gt^2/2

По условию

H=S

v0t= gt^2/2

v0=gt/2

Выражаем время

t=2v0/g

Время

t=2×10/10=2c

Высота

H= gt^2/2=10×4/2=20м

ответ 20м

Yurevna

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Must Waste More Time...


3. 200 грам ВОДЫ при температуре 15 °С смешали с 300 грамм водой при температуре 90°с. Найдите устан
Киларджиева Диана440

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Must Waste More Time...


Дано: U₁=15V, I₂=50мА, U₃=30V, R1=1000 , R₂=700 , R₃=500 Знайти: P₁₂ , Ii , Ui , Pu₁ ?

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Много ! длина полета и высота броска тела, брошенного горизонтально со скоростью 10м/с, равны. с какой высоты брошено тело?
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