|
Tractor Talk Discussion Board |
Re: Re: O/T for you science buffs
[ Expand ] [ View Follow Ups ] [ Post Followup ] [ Return to Forum ]
Posted by Steve - IN on November 07, 2003 at 17:35:07 from (12.222.30.13):
In Reply to: Re: O/T for you science buffs posted by rhudson, negating air fri on November 07, 2003 at 16:12:22:
It's not a fact. That science teacher violated Newton's 3rd law and ought to be sent to physics jail. Here's why: Consider this: Two Apollo space craft, both in the vacuum of space. Both have just slingshoted around the moon. One fires a rocket (pulled the trigger on the rifle) the other does not, and just relies upon Earth's gravity for its return. Which one gets home first? The one that fired the rocket, of course. Both have Earth's gravity pulling them, both are in a vacuum; but the rocket powered one has used Newton's 3rd -- every action results in an equal and opposite reaction --and gets home first. End of story. The speed of the rifle bullet leaving the tube against gravity is about 10 times greater than the speed of the bullet falling to Earth, propelled only by gravity. That's real simple. Also consider this: Cmdr Dave Scott, on the moon, 1971. Drops a hammer and a falcon feather at the same time. Near perfect vacuum. The feather hits a tad later than the hammer -- greater mass in the hammer. Galileo was right -- 400 years earlier. Speed of light. We leave Newton and enter Einstein territory. If E=MC squared, then at the speed of light, you're pure energy anyway, and don't see a thing. Assuming you're not pure energy, you neurons don't run faster than light speed anyway, so you don't notice any difference in anything you see from one moment to another, as everything is constant.
Follow Ups:
Home
| Forums
| Order Support
Today's Featured Article -
Chores - by Frank Young. The ceaseless passing of time! It is at once our friend and our enemy. It measures our progress and it makes us old. Like most features of our life, few things are all good or all bad, and most such judgments depend on our own perspective or viewpoint. In our particular hobby, we enjoy the nostalgic return to the days of our youth as we recreate many of the scenes that took place on the family farm that served as the stage for the first few acts of the play that is our live
... [Read Article]
Latest Ad:
one 8n and one 9n tractor. totaly restored,pretty much everything is new. one 6ft blade good shape.
[More Ads]
Copyright © 1997-2026 Yesterday's Tractor Co.
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V. Yesterday's Tractors - Antique Tractor HeadquartersWebsite Accessibility Policy |
|
