Предмет: Физика, автор: purepanda693

Тело массой 600 г при падении с высоты 20 м приобрело скорость 10 м/с. Найдите работу силы тяжести и силы сопротивления воздуха?

Ответы

Автор ответа: Эмико10
1
A = m*g*h=0,6*10*20=120 Дж 
Еп  + А= E к
A= m*V^2/2- m*g*h=0,3*100 -120=- 90 Дж
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