(adsbygoogle = window.adsbygoogle || []).push({}); Dimensional Analysis And Projectile Motion Problem

1.

The work I have shown below is my attempts at doing the steps shown to get that equation in the problem, which is what the "answer" is. I need to find the work. Am I on target?

And I am totally clueless as to how I get the second answer. I know that [tex]\theta[/tex] would equal 45 degrees right? Optimal launch angle disregarding air resistance. But I'm not sure.

3. The attempt at a solution

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# Homework Help: Dimensional Analysis Type Promblem

Can you offer guidance or do you also need help?

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