Why water is the same as concrete at high speed? At what speed? Anything else special about water too?

Question

water properties

Answer 1

Basically it is because when you hit something it takes some time for it to move out of the way. If you hit it at a very high speed it may take so much time to move out of the way that what you hit it with will also have to deform, bend or even it may break. If you hit it at an extremely high speed the amount of damage done to the object due to that deformation will be nearly the same whether you hit water or concrete.

Answer 2

I don't think "water is the same as concrete" when hit at high speed but it does have some of the same properties.

The amount of energy absorbed by the object in a collision with a surface is related to the change in momentum over time.

If you fall and hit the water, and bounce off very quickly with little deformation of the water surface, then the impact to you will be similar to hitting a concrete surface and bouncing off with little deformation of the concrete.

Surface tension of the water and the regular laws of inertia are such that the water will not deform quickly when hit by a high speed object, especially at any oblique angle, and so the object bounces and the impact on the object is, again, similar to hitting concrete.

Answer 3

How about the liquid tension properties. The way the molecules bond and you can actually see water with your bare eye hold it self just slightly above a full glass of water. Or do the test where you water two identical plants, one with regular water (hot if you want) and the other with microwaved water. The one watered with the microwaved water will grow slower the first few days and die in a week or two while the other thrives all along. Microwaving food corrupts DNA and you can see the broken chromosomes.

Answer 4

It's polar and consequently the molecules stick together tight.

Other things special about water? Jeez...so many, don't know where to start. It explodes when you throw group one elements in damn I'd like to see some Francium in H2O explosions are always fun.

Also, unlike the common rule goes (again due to polarity), water expands when it goes to a solid.

And pure water won't conduct electricity.

Answer 5

At high speeds, the viscosity is not so important. What is important is the density.

Answer 6

newtons law.. action/reaction... the faster aaaaaaa person goes the harder the fall...40 mph will do/// the only liquid that expands at 32 degrees