Предмет: Физика, автор: evago81866

помогите пожалуйста

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Автор ответа: tastaandreeva

1

Ответ:

1. 108 км/ч = 108*1000/3600= 30м/с

3 км/с= 3*1000= 3000м/с

60м/мин= 60/60= 1м/с

2. 72 км/ч=72 000м/3600 с=20 м/с страус

13 м/с конькобежец

на 7 м/с страус быстрее

3. решение во вложении:

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