Author Topic: If a train leaves a station... (Read 1473 times)

Pie Crust · March 28, 2014, 04:15:47 PM

Quote from: $trinick on March 28, 2014, 04:12:26 PM

Algebra 1 yo

Isn't this URM (Uniform Rectilinear Motion (Physics))?

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DRILL3R49 · March 28, 2014, 04:20:54 PM

The trains are going the same way

Minnax · March 28, 2014, 04:21:28 PM

Quote from: Treynolds416 on March 28, 2014, 11:34:20 AM

intersection of y = 30x + 30 and y = 50x

x = 1.5
So, 5:30

This is right.

Gumba Jonny · March 28, 2014, 04:26:12 PM

the passenger train makes a u-turn so they never meet

Ipquarx · March 28, 2014, 04:34:31 PM

Quote from: Pie Crust on March 28, 2014, 04:15:47 PM

Isn't this URM (Uniform Rectilinear Motion (Physics))?

You're solving a system of two equations by simple substitution.

1. y = 30x + 30 2. y = 50x
substitute 2 into 1

50x = 30x + 30
20x = 30
2x = 3
x = 3 / 2
x = 1.5

/Pacha · March 28, 2014, 04:41:29 PM

Quote from: snot2 on March 28, 2014, 02:48:17 PM

benedict cumberbatch

Decepticon · March 28, 2014, 04:43:56 PM

They're always departing but they never arrive... And the ones that do arrive... They never leave... You never see them go they're always full... No one ever gets on but they're always... They're always departing but they never arrive..

Blockzillahead · March 28, 2014, 04:44:10 PM

It's all experience baby. When you see the freight train pass the passenger train with your eyes you will then proceed to look at your watch and see the time. Good lord people, even a 5 year old can figure this out.