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anonymous
 one year ago
An archer releases an arrow from a shoulder height of 1.39 m. When
the arrow hits the target 18 m away, it hits point A. When the target is
removed, the arrow lands 45 m away. Find the maximum height of the
arrow along its parabolic path.
anonymous
 one year ago
An archer releases an arrow from a shoulder height of 1.39 m. When the arrow hits the target 18 m away, it hits point A. When the target is removed, the arrow lands 45 m away. Find the maximum height of the arrow along its parabolic path.

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Help meh coconut guy

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so far i drew the graph

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0idk how to get the maximum height

CoconutJJ
 one year ago
Best ResponseYou've already chosen the best response.0ermm... is the arrow released parallel to the ground

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0no its released from 1.39

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0and its a parabola so it won't be parallel to the ground

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0its curvy like a parabola ._.

CoconutJJ
 one year ago
Best ResponseYou've already chosen the best response.0You can have a parabola with an initial angle too though!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1435308134687:dw

CoconutJJ
 one year ago
Best ResponseYou've already chosen the best response.0According to your graph the max height would be 1.39m, however the question seems to easy

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0:O i just want to know how to find the maximum

CoconutJJ
 one year ago
Best ResponseYou've already chosen the best response.0Hmm let f(x) = ax^2+bc+c f(0) = 1.39 f(18) = (Height of point A) 16cm? f(45) = 0

CoconutJJ
 one year ago
Best ResponseYou've already chosen the best response.0c = y intercept c = initial height c= 1.39. You see where I'm going?

CoconutJJ
 one year ago
Best ResponseYou've already chosen the best response.0no.. solve the system of equations. plug in f(0), f(18) and f(45)

CoconutJJ
 one year ago
Best ResponseYou've already chosen the best response.0since we already know c... which is 1.39

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0nope I'm really lost

CoconutJJ
 one year ago
Best ResponseYou've already chosen the best response.0a(0)^2+b(0)+1.39=0 a(18)^2+b(18)+1.39=height of arrow a(45)^2+b(45)+1.39=0

CoconutJJ
 one year ago
Best ResponseYou've already chosen the best response.0I suppose the arrow's height should be 0.16m from the ground...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.01.71 is wat im getting

CoconutJJ
 one year ago
Best ResponseYou've already chosen the best response.0I found this yahoo answers just now about the exact question. They use a similar approach. However I'm confused on how you would find the height of the arrow, the diagram only gives the height of the sections https://answers.yahoo.com/question/index?qid=20121015160405AAfjtCu

CoconutJJ
 one year ago
Best ResponseYou've already chosen the best response.0^ I'm not quite sure what the height of point A is... Most likely 0.16m from the ground since it lies 4 section above the bottom of the target

MrNood
 one year ago
Best ResponseYou've already chosen the best response.0I am almost certain that the question does not give enough information to solve this as it stands. You NEED to know the height of point A from the GROUND and that is not given I guess we also have to assume that they mean "if the target was NOT present the arrow would land at 45m" ot htat eh second shot without the target is EXACTLY the aame trajectory. dw:1435311494413:dw

phi
 one year ago
Best ResponseYou've already chosen the best response.0See http://openstudy.com/study#/updates/52741308e4b09c259a0f64a7

MrNood
 one year ago
Best ResponseYou've already chosen the best response.0OK  THAT answer above has got more information  and gives the value for the height of A as required. it IS solvable once you have that information @Icedragon  was the height of the target given on YOUR drawing?
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