# Tag Info

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I think you have to lean forward and jump hop (like astronauts did). Now if the lean angle is too great then you would slip. The limit is $\tan \theta \le \mu$. Now with a jump of max (leg extension) speed $v$ at an angle $\theta$ from vertical kinematics have that the time per hop is $$t = \frac{2 v \cos \theta}{g} = \frac{2 v}{g \sqrt{1+\mu^2}}$$ ...

-1

In a "perfect" space suit probably only 4-6 mph!?! In a dome on grass or something mayB 10 even 11 but remember that U would not only B moving horizontally but vertically as well which would slow down even the fastest runners tho U should B able 2 sustain these speeds 4 much longer due 2 the minimal "weight" aspects..:)

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First one can get killed even by coming in contact (with speed from high altitude) with the water surface, which at this speed and momentum it appears as a "block of cement" (or more correctly, develop high enough forces to break your bones as per @dmckee's comment). This depends what wil be the impact surface (that is why seals and olympic divers fall into ...

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The visible and radio waves can cause heating effect when absorbed by the living cells. Human mind is effected by the electromagnetic waves and can change moods of a person. Higher radiations like Ultraviolet, X rays and Gama radiations can produce damage to life at powers that produce little heating.

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Short answer: It is a combination of the lever/pulley principle plus the transformation of chemical energy into mechanical energy which makes the muscle/weight system work like this. Longer Answer: The arm joints are small levers or pulleys, meaning the amount of force can be multiplied by the relative lenghts of arm joints. The chemical/thermal energy ...

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I would think that the energy spent to make a deadlift is related ( maybe in a non-linear way ) to the work done to move the bar. If you define work as always: $$W = F\Delta h = mg \Delta h$$ then you can define the energy spent by a machine as $$E = \frac{L}{\eta}$$ where $\eta$ is the efficiency of the machine. Now, no one can tell exactly what is the ...

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