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		<title>explain xkcd - User contributions [en]</title>
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		<updated>2026-04-14T20:45:19Z</updated>
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		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:2234:_How_To_Deliver_Christmas_Presents&amp;diff=183787</id>
		<title>Talk:2234: How To Deliver Christmas Presents</title>
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				<updated>2019-11-28T02:00:42Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.242.166: &lt;/p&gt;
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Is the equation in the comic wrong? It should be (4 kg*m/s) / (book mass), right?&lt;br /&gt;
[[Special:Contributions/108.162.221.245|108.162.221.245]] 19:34, 27 November 2019 (UTC)&lt;br /&gt;
:Yes, that's correct. The equation in part 2 should be (speed) = (momentum) / (mass), given (momentum) = (speed) x (mass). Though the answer seems to be correct, assuming a book mass of approximately 0.8lbs (0.36kg). --shabegger {{unsigned|Shabegger}}&lt;br /&gt;
::Have added this to a [[#Trivia|trivia section]]. Maybe Randall will later update the comic, although it is probably cumbersome... But if he does, then that should go in the trivia and the mention of this that I made in the comic, should be changed to, there was an error... Feel free to improve my formulas. --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 21:35, 27 November 2019 (UTC)&lt;br /&gt;
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Is that a &amp;quot;Baby Yoda&amp;quot; in the right window? [[Special:Contributions/172.69.6.94|172.69.6.94]] 20:06, 27 November 2019 (UTC)&lt;br /&gt;
:Houseplant [[User:N0lqu|-boB]] ([[User talk:N0lqu|talk]]) 20:33, 27 November 2019 (UTC)&lt;br /&gt;
::Nope that is Pikachu, I'm certain. --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 21:10, 27 November 2019 (UTC)&lt;br /&gt;
:::I also thought it looked like Yoda. In the 2x version, it looks most like a baby elephant, but careful examination suggests it's probably Pikachu in a ''really'' weird perspective (the thing that looks like Yoda's second ear is actually Pikachu's ''tail'', and his ''actual'' second ear is probably behind his head). --[[Special:Contributions/141.101.77.62|141.101.77.62]] 22:47, 27 November 2019 (UTC)&lt;br /&gt;
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Why the uptick in fireplaces around 2012/2013? [[Special:Contributions/172.68.242.166|172.68.242.166]] 02:00, 28 November 2019 (UTC)&lt;/div&gt;</summary>
		<author><name>172.68.242.166</name></author>	</entry>

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