/sci/ - Science & Math

>>10191244
>of course it w-
>but you'll leave the ground faster, so you'll apply less force
>o-oh, so it isn't actually trivial, lemme model it properly
When you jump, first press your legs up together, and then you expand. Your feet touch the ground the whole process, so that you'll be applying the jump's force along the height difference between crouching and standing.
Because the gravitational force in earth is higher, the jump on the moon produces more work (the more final force along the same distance), and thus speed.

>falling for the "calling out the bait" bait
>on purpose
The most profound dilema of life. What would Kant say about this? Would he call me an idiot? Would he say I'm weak? Is it stupidity or is it weakness?
Anyhow, please do leave the board and don't come back.

>>10133817
The cheap and easy guide to finding subgroups:
Pick a random element.
Close up the set containing it.
Pick an element that's not in any previous subgroup and close that up too.
Once you start accumulating groups, take unions and close them up too.

>>10122035
From A to B is goes through a distance AB, and takes a time m=60/AB, by the definition of speed. From B to A it goes through a distance AB, and takes a time n=90/AB.
Since it goes through a distance 2AB in a time m+n, it has speed 2AB/m+n. Substituing, 2AB/(60/AB+90AB)=2AB/150AB=75.
It's easy but the formal demonstration is weird.