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Cake day: January 1st, 2024

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  • ji17br@lemmy.mlto196@lemmy.blahaj.zonePhysics rule
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    3 months ago

    You want to figure out distance per second. One way to do this is calculate distance apart at t=0,1,2…

    The difference between each point would be the average speed over that second.

    Using sqrt(b2+g2):

    t0 = 0 t1 = 1.554m
    s1 = (1.554m-0m)/1s = 1.554m/s t2 = 3.108m
    s2=(3.108m-1.554m)= 1.554m/s

    As you continue this you will see they travel at a constant speed apart from each other. The reason this is working is because you need to divide distance by time. Dividing by 1 second won’t change the value of the number after you subtract. If you notice you can do (t2-t0)/2s and also get the same answer.



  • ji17br@lemmy.mlto196@lemmy.blahaj.zonePhysics rule
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    3 months ago

    It’s the difference of distances apart over time. Aka how fast bf is moving away from gf, aka what the question is asking for.

    Yes, if you want to be pedantic, velocity a vector with direction, so I guess you’d have to frame the question relative to either the boyfriend or girlfriend, but I don’t think the difference between speed and velocity is part of the question.




  • ji17br@lemmy.mltoAndroid@lemmy.worldBuying Music on Android
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    8 months ago

    There’s no security implications with allowing users to play mp3 files, they don’t care where they came from. 75% of my library is music that I either pirated or ripped from my own CDs, it’s not like iTunes (now Music) can tell which is mine and which isn’t. Same thing with movies/tv shows.





  • ji17br@lemmy.mlto196@lemmy.blahaj.zonerulemission
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    10 months ago

    I am not supporting shell here, just asking a question.

    If I am correct in assuming that shell produces 928 million tons (58,000,000 * 16) that means if the average American reduced their CO2 output from 16 down to ~13.3 then that would offset the total output of shell?

    Is that amount of reduction even possible for the average American without giving up too much?

    Obviously every company should do everything they can do lower emissions, but per person changes can have effect too. The problem is the vast majority of the 340 million Americans simply don’t care.