Предмет: Физика, автор: anastasiacherevko

Незрелый плод персика массой 170 г падает с дерева. Чему равна кинетическая энергия персика за миг до
удара о землю, если персик свободно падал с высоты 1,6 м? С какой скоростью персик врeжeтся в землю?
Н
(Принять g = 9.8 —).
KI
Ответ (округли до десятых):
ОУ 0 m/c
Ek 7 Дж
г

Приложения:

Ответы

Автор ответа: zinovicgrigorij
2

Ответ: 5,6м/с; 2,67Дж

Объяснение:

Дано:

m=170г=0,17кг

g=9,8Н/кг

h=1,6м

-------------

V-?; Ек-?

V=√(2gh)=√(2*9,8*1,6)=5,6м/с

Ек=mV²/2=0,17*5,6²/2=2,67Дж

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