Timeline for How does Newton's third law apply to an object interacting with air?
Current License: CC BY-SA 3.0
9 events
| when toggle format | what | by | license | comment | |
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| Oct 21, 2015 at 14:51 | comment | added | Señor O | @user2357112 Sure, but I'm not trying to be mathematically succinct, trying to make a point about Newton's third law. | |
| Oct 21, 2015 at 5:00 | comment | added | user2357112 | @SeñorO: It'll supply the impulse, but not necessarily the same force. | |
| Oct 20, 2015 at 22:37 | comment | added | Aequitas | @tmwilson26 it's not just the tendons and ligaments stretching, your shoulder would move forward also to increase the time | |
| Oct 20, 2015 at 17:57 | history | edited | tmwilson26 | CC BY-SA 3.0 |
added 400 characters in body
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| Oct 20, 2015 at 17:54 | comment | added | tmwilson26 | Right, I understand where the comment is coming from now. I can add a line clarifying this point. | |
| Oct 20, 2015 at 17:52 | comment | added | Brad | The comment about about the socket of your arm is more apropos. It's not "air friction" slowing you down, but [different] muscles, stretching of ligaments, etc and arm itself. (It would work likewise in a vacuum). These are all "pushing" against the weight of your body. If you were wearing ice-skates doing this, you might jerk a bit backwards during the initial punch, then come to a stop during the "recoil". Punch and recoil both apply forces and acceleration in opposite directions - netting a "zero" result. | |
| Oct 20, 2015 at 17:14 | comment | added | tmwilson26 | This is true :), I used the $\text{100 N}$ figure to coincide with the question. An arbitrary place holder should probably be used instead. At least we have the humorous thought experiments that come with that number. | |
| Oct 20, 2015 at 17:11 | comment | added | Señor O | In the absence of 100N of force for the air to counteract the momentum of your arm, you'll notice your arm socket will have to supply the 100N force to eventually stop your arm. And that will hurt. | |
| Oct 20, 2015 at 15:03 | history | answered | tmwilson26 | CC BY-SA 3.0 |