Предмет: Физика, автор: qwertnats78n

Механическая работа совершается

а) если на тело действует сила, и оно движется;

б) если тяжести равна весу тела;

в) всегда, когда тело движется.

Механическую работу вычисляют по формуле:

а) p=F/S

б) P= mg

в) А=F∙s

За единицу мощности в системе SI принят:

а) Джоуль;

б) Ватт;

в) Ньютон

За единицу работы в системе SI принят:

а) Джоуль;

б) Ватт;

в) Ньютон

Ответы

Автор ответа: serovaksusa1

Ответ:

1) а

2)в

3)б

4)а

Объяснение:

Смотри выше

serovaksusa1: Я русская, мне не все там понятно, к сожалению

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