Portal Physics Problem

Please watch in HD for a more clear presentation! Fullscreen works best as well.

Question:
A test subject is on a ledge 5m from the ground. The cake is on the ledge in front of her 10m from the ground. The ledge is 5m away from her. She places a Portal on the ground below and another behind her on the wall above, 15m from the ground. The wall is 10 meters from the cake. If she falls into the Portal below and comes rocketing out the other, will she get the cake?

This was a video I made for one of my visuals aids as part of my physics class presentation about the physics in the game Portal. I made the drawings and problems. Hope you enjoy it!

I got 30/30 on this assignment :D

Category:

Education

Tags:

• portal
• physics
• class
• problem
• forward
• momentum
• projectile
• motion
• valve
• aperture
• science
• how
• to
• find
• instantaneous
• velocity
• cake
• is
• lie

[FHomeBrew]

That cake is HUGE! or the subject is really small :p

In stead of conservation of momentum, speed and velocity, I'd say conservation of kinetic energy, as the best label to slap on there. Although we all know what you're talking about.

Great example. Imma use a similar problem for my physics students who know this game :D

[win713]

@FHomeBrew

I made a mistake in the middle of the project that made the subject a lot smaller, and I couldn't undo it. I was lazy and decided to keep the mini subject xD

I see your point, since the direction of the speed changes as the subject enters the portal. I'll edit that annotation at 0:50 Thank you for pointing that out.

I'm sure your students will love you for using Portal as a teaching aid xD

[pckables]

No, it will not work because the cake is a lie.

...

SOMEONE had to say it!

[win713]

@pckables

I was tempted to say that in my presentation. However the teacher never played Portal, and would therefore not understand the joke xD

[jachvideos]

Wtf? Just jump and see if it works

[Annfrank5945]

wot

[SelfEsteemFund11]

This is before considering angles, correct? This also features my favorite song :D

[smurfton94]

You forgot one thing in your calculations: nobody attempts to make a jump without... jumping. Whilst she would have made it anyway, shouldn't your average human's jump height been factored into this?

[Pikakatsuki]

@jachvideos *Someone* isn't a scientist. >.>

[giantnoah]

just jump if you miss you wil probably have more momentum as you go in the secound time or just infinite fall and shoot the top portal to the wall

[loeparedes1]

yes, it will work, portal here, portal there, you jump, get the cake. Victory!

[Milesprowerz]

Easy

[Gaul99]

um... what?..

[Weemancake]

OR you could just grab the ASHPoD and do it and see if it works.

Aperture Science will surely give you cranial surgery if it doesnt work. Along with complimentary cake.

[lekiyo]

the test object has to crawl to get trough the "door"