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Level 5 Physics qualifying question is really math?

Hello all of you Brilliant people! haha.

I very recently just made my account (like, an hour ago, haha) and I was doing the qualifying problems with physics. Note that I have never taken a comprehensive physics class in my life. Thus I was unable to do many of the problems in even level 2 and 3.

However, I was able to do the level 5 question, and now I am in level 5. Why? Because while I may not be good with physics, I am good with math. And the level 5 question was really a math question with a physics base.

For those who don't know, the question was: You have a disc on the x-y plane starting at the origin. You launch the disk and elastically hit a wall with equation y = x - 2, crossing the y-axis again at y=1. What angle (in radians) did you launch the disc from?

So now I am forced to be in level 5, but I don't know how to do the problems because I am not knowledgable in physics. I am not too sad about that, but I wonder, why was this the chosen question?

Note by Ji Young Shin
4 years, 4 months ago

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5 votes

  Easy Math Editor

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# up as a code block.

print "hello world"
MathAppears as
Remember to wrap math in \( ... \) or \[ ... \] to ensure proper formatting.
2 \times 3 \( 2 \times 3 \)
2^{34} \( 2^{34} \)
a_{i-1} \( a_{i-1} \)
\frac{2}{3} \( \frac{2}{3} \)
\sqrt{2} \( \sqrt{2} \)
\sum_{i=1}^3 \( \sum_{i=1}^3 \)
\sin \theta \( \sin \theta \)
\boxed{123} \( \boxed{123} \)

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I can't reply to your question, but if you want to downgrade you can send an email to mathematics@brilliant.org with your request and they'll downgrade you ;)

Luca Bernardelli - 4 years, 4 months ago

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If you have to low your level down just make a problem wrong without doing other problems correct

Karan Kewalramani - 4 years, 4 months ago

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weird

Jason Kang - 4 years, 4 months ago

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Me too

Daniel Leong - 4 years, 4 months ago

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