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An OpenStudy user's speed is 40 medals per day and his acceleration is 2 medal/day^2. If it takes 4,500 medals to reach the Legend rank, how many days will it take for him to reach the rank?
 one year ago
 one year ago
An OpenStudy user's speed is 40 medals per day and his acceleration is 2 medal/day^2. If it takes 4,500 medals to reach the Legend rank, how many days will it take for him to reach the rank?
 one year ago
 one year ago

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joemath314159Best ResponseYou've already chosen the best response.3
What is his/her initial medalage? does he/she start from 0?
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
but isnt this an ordinary math problem too?
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
i mean the basic concepts still come in play
 one year ago

javawarriorBest ResponseYou've already chosen the best response.0
its both, physics and math.Arguably physics is nothing without math though :)
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
lol can we just teach me how to solve this? :p
 one year ago

javawarriorBest ResponseYou've already chosen the best response.0
well first of all, his acceleration cant be 2 medals/day a = v / t since you postulated that v = 40 per day a = 40 per day because a = delta V / delta t
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
but my book says 50 days o.O
 one year ago

joemath314159Best ResponseYou've already chosen the best response.3
I would consider it an initial velocity. Its like saying a car is going at 40 ft/s, and accelerating at 2 ft/s^2.
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
yeah that'swhat i think too
 one year ago

joemath314159Best ResponseYou've already chosen the best response.3
To solve the problem use the formula:\[d = x_0+v_0t+\frac{1}{2}at^2\]Set d to 4500, intial position to 0, intiial velocity to 40, and acceleration to 2. Solve for t.
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
so 4500 = 40t + t^2?
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
hmm yep i think that gives 50thanks
 one year ago
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