Предмет: Физика, автор: kydyrmaevaajnazik

помогите пожалуйста

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kydyrmaevaajnazik: ну пжж помогите

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Автор ответа: ergan93abdrahmanov

1

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формула расчёта средней скорости равна vср= (v1+v2)2 и получается vср=(60+х)/2

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