TrentEastwood
An 80g arrow is fired from a bow whose string exerts an average force of 125N on the arrow over a distance of 90 cm?



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TrentEastwood
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@3psilon your thoughts on this?

ksaimouli
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so what u need to find

3psilon
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First of all, Did you get the other one?

TrentEastwood
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What is the speed of the arrow as it leaves the bow? @ksaimouli and @3psilon

ksaimouli
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ok first find acceleration f=m*a change the g in to kg and use kinematic

TrentEastwood
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@3psilon ok i got a to be 1562.5

3psilon
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Let me check it

3psilon
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dw:1350612978140:dw

3psilon
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Idk if that is right But it made sense to me

Algebraic!
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\[F _{avg} *d = \Delta KE\]

3psilon
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w = (1/2)mv^2
w = fd
fd = (1/2)mv^2

Algebraic!
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use newtons, kg and meters..

3psilon
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Just solved for V

3psilon
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Get it @TrentEastwood ?