Предмет: Физика, автор: meowweals

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Ответы

Автор ответа: dyexfnf
1

Ответ:

Объяснение:

1)

Дано:

h = 2 м

V = 5 м/с

Найти: t -? S - ?

h = gt²/2 звідси знайдемо час падіння м*яча

t = √ (2h/g) = √ (2*2/10) ≈ 0,63 с

Відстань на якій упаде м*яч

L = Vt = 5 * 0,63 ≈ 3,15 м

2)

Дано:

V₀ = 72 км/год = 20 м/с

α = 60°

Найти: t - ? h - ? S - ?

t = 2* V₀* sinα/g = (2 * 20 * √3/2)/10 = 3,44 c

h = V₀² * sinα²/2 * g = 20² * (√3/2)²/2 * 10 = 14,8 м

S = V₀* cosα * t = 20 * 1/2 * 3,44 = 34,4 м


meowweals: спасибо большое
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