N=A/t
A=FS=(1000 kg*10m/s^2)*19 м=190000Дж=190 kДж
30000Вт=190000Дж/t
t=6.3 сек
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N=A/t
A=FS=(1000 kg*10m/s^2)*19 м=190000Дж=190 kДж
30000Вт=190000Дж/t
t=6.3 сек