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Свободное падение тела. Тело массой 500 г падает с ускорением 8 м/с 2 . Какова средняя сила сопротивления воздуха?
Ответы 1
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Запишем Второй закон Ньютона в проекциях на ось ОХ:
mg-Fc=ma
Fc=m(g-a)=0,5 кг*(10м/с2-8м/с2)=1 Н
Ответ:1 Н
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Автор:
loserfjzg - 5 лет назад
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ПОМОГИТЕЕЕЕЕЕЕЕЕЕЕЕЕ................................................................2 Read the text. Then read the sentences and choose True or False.
1 Sally was 13 when she first tried windsurfing.
True / False
3 Andy was good at windsurfing.
True / False
5 Sally thought windsurfing looked difficult.
True / False
7 Sally was worse at windsurfing than Beth.
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10 Sally now goes windsurfing every year.
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