Asklemmy

46683 readers

2 users here now

A loosely moderated place to ask open-ended questions

Search asklemmy 🔍

If your post meets the following criteria, it's welcome here!

Open-ended question
Not offensive: at this point, we do not have the bandwidth to moderate overtly political discussions. Assume best intent and be excellent to each other.
Not regarding using or support for Lemmy: context, see the list of support communities and tools for finding communities below
Not ad nauseam inducing: please make sure it is a question that would be new to most members
An actual topic of discussion

Looking for support?

Looking for a community?

Lemmyverse: community search
sub.rehab: maps old subreddits to fediverse options, marks official as such
[email protected]: a community for finding communities

~Icon~ ~by~ ~@Double_[email protected]~

founded 6 years ago

MODERATORS

[email protected]

Flat earth thought (self.asklemmy)

submitted 2 months ago by batman654987 to c/[email protected]

18 comments fedilink hide all child comments

I heard something new that realy makes you wander. If the earth is rotating as they say than how airplanes can go in straight line? If earth is moving under them they should land way off the desired destinacion.. 😮 They are not connected to the earth so rotacion shouldnt apply to them, it applyes only to cars and runing animals but not on airplains and bierds.. Also when you jump from baloon that is wery high up, you shouldnt fall straight down, if the earth is rotating it should move under you and you could newer fall on the same spot that you jumped over.. 🫢

I cant beleave this newer came to my mind for entire life.. 😵

you are viewing a single comment's thread
view the rest of the comments

[–] vastard 2 points 2 months ago

Two concepts: gravity and momentum.

Gravity pulls mass towards the centre of the earth whether they are physically touching the ground or not. This is the reason when you jump you come back down and don’t just float off into the sky. This also is important for things like planetary atmosphere so the air around the planet doesn’t just diffuse into space.

Though you are jumping straight up and down from your perspective, relative to the planet your jump matches the constant rotation speed of the earth. Momentum states that objects in motion prefer to stay in motion unless met with an opposing force. So you land with the same rotation as you started. You can test this by tossing a small object in a moving car as you brake: it will continue forward as you decelerate.

Disclaimer: not a physicist, I just love Bill Nye and other science video presenters.