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olya-2409 [2.1K]
3 years ago
14

" A projectile is launched in the air according to the equation h(t)= -16t^2 + 125t + 5. At what time does the projectile land?"

and how do I do problems like these!?
Mathematics
1 answer:
Vlad1618 [11]3 years ago
8 0
"according to the equation is a sloppy description, and announces that whoever said it or wrote it doesn't really have a clue to what the equation means or what it's good for.

h (t) is the HEIGHT of the projectile above the ground at any time 't'. When the projectile hits the ground, h (t) is zero. Write that ! Then you have a quadratic equation that you can easily solve for 't'.
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The <em>instantaneous</em> rate of change of <em>g</em> with respect to <em>x</em> at <em>x = π/3</em> is <em>1/2</em>.

<h3>How to determine the instantaneous rate of change of a given function</h3>

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g(x) =  \lim_{h \to 0} \frac{f(x+h)-f(x)}{h}

Where h is the <em>difference</em> rate.

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g(x) =  \lim_{h \to 0} \frac{\sin (x+h)-\sin x}{h}

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g\left(\frac{\pi}{3} \right) = \cos \frac{\pi}{3} = \frac{1}{2}

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