This problem has been giving me headaches for the past two weeks. Here it is, as well as how far I have gotten on it:(adsbygoogle = window.adsbygoogle || []).push({});

A projectile is fired with an initial velocity of 53m/s. Find the angle of projection such that the maximum height is equal to it's range.

So that basically boils down to:

H = R

Vo = 53m/s

ay = -9.81m/s^2

t = unknown

x (angle) = find

According to the nifty sheet the teacher tossed out the applicable formulas would be:

R=Vo^2*sin(2x)/g (since Ho and Hf will be the same)

H=Voy^2/2g.

Making H=R gets the formula Voy^2=2*Vo^2*sin(2x) ...which doesn't help me since x is what needs to be found, and without x one can't break Vo into component form.

Do I have the right idea or have I flubbed it already?

Thanks,

-K

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# Homework Help: A 'simple' projectile problem.

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