/sci/ - Science & Math

File: 647 KB, 720x404, Escape.webm [View same] [iqdb] [saucenao] [google]

Anonymous Mon May 2 06:54:01 2016 No.8044969 [Reply] [Original]

This is a video of a truck getting thrown off of an aircraft carrier. When it hits the water, it bounces off instead of sinking. Why?

>>	Anonymous Mon May 2 06:55:44 2016 No.8044972 >>8044969 look up physics of stone skipping

>>	Anonymous Mon May 2 06:56:36 2016 No.8044974 >>8044972 B-but that's why I came here.

>>	Anonymous Mon May 2 07:00:34 2016 No.8044982 >>8044974 Surface tension of water, a big chunk of the kinetic energy in the truck is reflected back when it hits

>>	Anonymous Mon May 2 07:17:42 2016 No.8045009 >>8044969 of far more importance is WHY the truck was flown off the aircraft carrier. remember, without philosophy, science is a blind man stumbling in the dark.

Anonymous Mon May 2 07:20:59 2016 No.8045012
File: 12 KB, 743x253, skipstone.png [View same] [iqdb] [saucenao] [google]

>>8044969
The object compresses the water as it hits it and the water pushes it up again as it decompresses, a bit like a trampoline. If the angle is right and the object has enough forwards momentum to continue despite the friction of the water, then the object will be ejected and can potentially do another skip.

As you can see in your webm, it works best if the object is hitting the water with a big flat surface. The perfect entry angle appears to be 20 degree. If the object gets ejected and enters the water at a similar degree angle again, then it will do another skip if it still has forwards momentum.

>>	Anonymous Mon May 2 14:46:51 2016 No.8045600 >>8044969 This is the worst camera man on earth.

>>	Anonymous Mon May 2 15:02:40 2016 No.8045620 File: 266 KB, 598x600, 1453388196695.jpg [View same] [iqdb] [saucenao] [google] buoyancy

>>	Winner Mon May 2 15:12:41 2016 No.8045645 Very nice. The vehicle is lighter than the water according to its speed as it headed toward the water so it bounces off.

>>	Anonymous Mon May 2 19:17:50 2016 No.8046145 >>8045600 At least give us one inside the truck.

>>	Anonymous Mon May 2 19:49:23 2016 No.8046224 Think of water as a trampoline. It will bounce off it cause water tension

>>	Anonymous Mon May 2 20:13:23 2016 No.8046290 >>8044982 >surface tension More like density and dynamic pressure.

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