So I have to tell that my english isn't to good , so i will be able to explain exacly what i need if that will be needed
1) how big power do you need to use to make 1 kg body fly up to 50 meters ?
1
Expert's answer
2011-10-20T12:13:31-0400
First let's find initial velosity of the body required to reach 50m energy conservation law: mv^2/2=mgh where m -mass of the body, v - initial velosity, h=50m hence v=sqrt(2gh)=31 m/s When making body to move force will do work A=mv^2/2/ where v -initial velosity So A=1*31^2/2=490,5 joules -& work done to make body fly up to 50m
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Comments
Ahh ; / I've made a mistake when translating the question. That should be "How big force"
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