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quote:Originally posted by bostjanOr it would skewer you on the end of the pole, depending on if it was moving towards you to begin with.
quote:Originally posted by lightarrowLet's make a little computations.I don't know how much the St Pauls Cathedral could weigh, but, let's say it could be around 10,000 tons (if it's not St Pauls Cathedral, it would be another body with this weight). 10,000 tons = 10^7 Kg.Let's say that you push it with your legs and that you can do it with a 50 Kgp force ~ 500 N. The body's acceleration would be a = F/m = 500/10^7 = 5*10^(-5) m/s^2. If you could be able to maintain this push constantly for an entire day ~ 100,000 seconds, then the body would acquire a speed of v = a*t = 5*10^(-5)*100,000 = 5 m/s = 18 Km/h.The body's momentum p and its kinetic energy E would be:p = 5*10^7 Kg*m/sE = 1.25*10^8 Joule.
quote:Originally posted by syhprumI think one of the reasons why some people have difficulty in following what is basicly very simpe arithmetic is the problem of writing it down in the word editor available here.although people used to the shorthand used find it easy to follow I think if we are to have everyone understand it we should use more of a junior school stylesyhprum
quote:p = 5*10^7 Kg*m/sE = 1.25*10^8 Joule