Предмет: Физика, автор: пепсик1

Определите кинетическую энергию мяча массой 1 кг, катящегося по траве со скоростью 20 м/c.

Ответы

Автор ответа: olichka2015

Ek=(mu^2)/2? т.е. 1*400/2=200

Автор ответа: Gochka

Eк= m(U^2)/2 = 1*20*20/2 = 200 Дж

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