Mathematics, 28.12.2019 05:31 sierravick123owr441
An object falls freely in a straight line and experiences air resistance proportional to its? speed; this means its acceleration is ? a(t)=? ? kv(t), where k is a positive constant and v is the? object's velocity. the speed of the object decreases from 800 ft/s to 700ft/s over a distance of 1400 ft. approximate the time required for this deceleration to occur?
Answers: 1
..........(1)
![1400= -\dfrac{800}{k}[e^{-kt}-e^0]](/tpl/images/0435/4461/25b1f.png)
![k= -\dfrac{8}{14}[\dfrac{7}{8}-1]](/tpl/images/0435/4461/70174.png)
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An object falls freely in a straight line and experiences air resistance proportional to its? speed...
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