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Threads by latest replies - Page 15

(10 replies)

Books to learn maths

No.11861925 ViewReplyOriginalReport
I dont remember anything I learned on highschool, the only things I can do are multiplications, divisions and some really simple algebra stuff. I would like to have a good guide to try to learn all the stuff I missed/forgot
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(6 replies)
No.11863558 ViewReplyOriginalReport
Entropy does not exist, change my mind.
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(22 replies)
No.11861042 ViewReplyOriginalReport
You could fix anything if you could program DNA.
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(29 replies)
No.11863659 ViewReplyOriginalReport
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(14 replies)
No.11863915 ViewReplyOriginalReport
Redpill me on the damages caused by smoking weed.
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(49 replies)
No.11852817 ViewReplyOriginalReport
Why does chemistry suck so much? Why do I have to study this shit? Fuck it, I just wanted to do physics.
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(5 replies)
(9 replies)
No.11862399 ViewReplyOriginalReport
Is a pandemic a natural disaster?
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(25 replies)

Ball + train collision

No.11860714 ViewReplyOriginalReport
Is this correct? This isn't my homework. This is something that was discussed on r9k and I think everyone got it wrong.

They said when a ball and train collide (elastically) and they're both initially going at 100 km/h in opposite directions, a bystander will see the ball bouncing back at 300 km/h. To me this is just wrong. Check pic for my explanation.
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(12 replies)
No.11863203 ViewReplyOriginalReport
how do I become an extrovert?
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