Предмет: Физика, автор: tomi83

Плиз помогите Физика

Приложения:

Ответы

Автор ответа: loolbd
1

Ответ:

дано:

V=7, 2км/ч

t=10мин

F=25кН

найти:

А-?

си:

V=2м/с

t = 600с

F= 25 000Н

решение:

A=FScosa

A=FVt

A=25000 × 600 × 2 = 30 × 10^6 Дж = 30МДж

ответ: А=30МДж

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