(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

The speed of a projectile when it reaches its maximum height is 1/4 the speed when the projectile is at 1/4 its maximum height.

What is the initial projection angle?

Answer in units of ◦

2. Relevant equations

v^{2}= v_{0}^{2}+ 2a(delta s)

4V_{x}= v_{1/4}

3. The attempt at a solution

I've tried substituting v_{1/4}for 4v_{x}and some other things, but I lost those papers.

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# Projectile at 1/4 height

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