Предмет: Физика, автор: лера030728

Решите пожалуйста 4.2 и 5.1

Приложения:

Ответы

Автор ответа: 3Agnia3

5.1. Здесь применяются две формулы и в итоге это все складывается:
N=A/t и так как мощность равна силе тяжести, то N=F=mg.
Решение:
120Дж/0,2с=600вт - N1
4*10=40 или 4*9,8=39,2вт - N2
600+40=640 или 600+39,2=639,2 - N3

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