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

A projectile is being launched from ground level with no air resistance. You want to avoid having it enter a temperature inversion layer in the atmosphere a height h above the ground.(a) What is the maximum launch speed you could give this projectile if you shot it straight up?Express your answer in terms of h and g.

2. Relevant equations

According to me the equation that applies is h(t)=Y_{i}+V_{i}t-(1/2)gt^{2}

3. The attempt at a solution

I'm lost in this problem I tried doing it as an optimization problem from Calc. I but it just didn't make sense. The other thing I did was solve for V_{i}in the above equation but it din't give me anything close to the answer in the book I got V_{i}=(h+4.905t^{2})/t and the answer in the back is (2gh)^{(1/2)}. Any help will be appreciated, Thanks.

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Motion in two or three dimensions

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