Предмет: Физика, автор: emili291210

Автомобіль їхав 3 години зі швидкістю 60 км/год. потім 2 год зі швидкістю 70 км/год. Яка середня швидкість?

Ответы

Автор ответа: Sukasleva
1

Ответ:

Объяснение:

Для розрахунку середньої швидкості автомобіля з'їздиться загальний шлях, поділенний на загальний час подорожі.

Загальний шлях за перші 3 години:

Шлях1 = Швидкість1 * Час1 = 60 км/год * 3 год = 180 км

Загальний шлях за наступні 2 години:

Шлях2 = Швидкість2 * Час2 = 70 км/год * 2 год = 140 км

Загальний час подорожі:

Загальний час = Час1 + Час2 = 3 год + 2 год = 5 год

Загальний шлях:

Загальний шлях = Шлях1 + Шлях2 = 180 км + 140 км = 320 км

Отже, середня швидкість автомобіля розраховується як загальний шлях подорожі поділений на загальний час подорожі:

Середня швидкість = Загальний шлях / Загальний час = 320 км / 5 год = 64 км/год

Таким чином, середня швидкість автомобіля становить 64 км/год.

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