TOPIC: They'll kill us all!!!

No one ever expects ignorance to fight back. That's where they all go wrong.

<br />I wonder if they are factoring in that not everyone jumps as high, or has the same hang time, as everyone else.  <br />Hey, Doug, you're the engineer... you have any mathematical equations to combat this silliness?   :toothy9:<br />

<br /><br />Ok, I'll give it a shot.  But I warn you... you asked for it.  <br /><br />Well, just looking at the relative masses...<br /><br />Earth: 5.972e24 kg (say 6.0e24kkg)<br />One person:  75kg?  Lets just say 100kg for simplicity.<br />600,000,000 people:  6.0e10<br /><br />If F=MA, and assuming everyone jumped 1 Meter high. then using the equations of motion, X=Xo+vot+1/2at^2.  where Xo = 1M, vo = 0, a = 9.81M/sec2 and X = 0M so:<br /><br />0 = 1 + 1/2(9.81)t^2<br /><br />Solving for t = .45 sec <br />v = vo +1/2 a t<br />v = 0 + 1/2 (9.81) (.45)<br />v = 2.2 m/s<br /><br />F = 1/2 m v^2 = .5 ( 100) ( 2.2) = 110 Newtons per person.<br />Total force of the jump would be 110*600,000,000 = 6.6e10N<br /><br />Back to F=MA or A=F/M<br /><br />A = 6.6e10N/6e24KG = 0.000000000000011 m/sec2<br /><br />If you weigh 100KG, this is like someone trying to push you with 0.0000000000011 N of force.  This is like the weight of an atom running into you.<br /><br />Trust me, the Earth won't notice.  :icon_rr:<br />

LOL! That was awesome Douglas!

Douglas... you rule.  :blob10:<br /><br />Can I get fries with that as well?

*hands you french fries*

Glad you guys had fun with it.    :thumbsup:<br /><br />:sunny:

Hooray!