Предмет: Физика, автор: polinamorskaya

Определите массу тела,обладающего кинетической энергией К=4.5мДж и движущегося равномерного со скоростью v=15см/с.

Ответы

Автор ответа: VasiliyyG
0
V = 15 cм/c = 0.15 м/c 
Eк = 4.5 мДж = 0.0045 Дж 
Решение: 
Ек = (м * V^2) / 2  =>
м = 2Eк / V^2 = 0.008 / 0.0225 ~ 0.356 кг 

Автор ответа: polinamorskaya
0
что такое Ек и V^2
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