Crosswords1 min ago
What's The Maximum Speed A Falling Object Can Achieve?
Flicking through FB the other evening I saw a photo of a weapon from WW1. It was like a large dart designed to be dropped from an aeroplane. You'd guess it would be more miss than hit, but if it did manage to hit someone could it have proved fatal?
Answers
There was an early 20th cent. German writer (cant remember his name at the moment) who longed to go to Paris. When he finally did so, on the first day he walked along the Les Champs-Elysées and a branch broke off tree, landed on his head and killed him. It can't have been moving very fast.
I like the story because it has no moral whatsoever.
Used by the Germans on Lundy 1917 - In fact - there was archive footage a day or so ago, on zeppelins - series begins Fri etc
and there was footage of a a sort of Beer bottle crate being released ( bottles only) - and I thought - god is this archive footage of darts from the gt War.
I am SURE there is one in the IWM - The first bomb evva dropped on Lundy is somewhere there - ( I had to think about that one)
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At school, a pupils mother had witnessed s death - basically they bleed to death.
Terminal vel - depends on the shape. A betrayed young lady in 1880 jumped from the Eiffel Tower and was outraged to land at the bottom unhurt ( parachute principle)
WHEREAS - those jumping from Twin towers were in excess of 200 mph. ALL the clothes of everyone were ripped off on the way down in the slipstream and the result was (lumps of meat)
someone asked
Newton - F =ma is modified to F - kv2 = ma - that is the resistive force varies with the square of the veolocity it has
( gives a term vel of root f/k) - note to self: majority of ABers cant add ! - and you adjust k to taste.
[ K varry leedol, then v very high and so on] - same equations as ball-bearing falling froo oil
The mass of the falling body is irrelevant; all that matters is the shape of the body and the density of the medium it is falling through (Galileo's Tower of Pisa experiment). PP's K x vsquared term allows for the drag.
In a vacuum a body accelerates increasing its speed by 32ftper second every second.
ok all I'm saying is that take away the atmosphere and mass is totally irelevant but drop two identical spheres one lead one wood in the atmosphere then the mass will have an effect even though the drag coefficient is the same. Gallileo used the LTOP to test this. He did know that mass is irelevant in a vacuum but was unable to prove it but he did get close with spheres of different materials. It was later proved on the moon with the hammer and feather drop.
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