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You did 150 joules of work lifting a 120 newton backpack

a) How high did you lift the backpack?
b)How much did the back pack weigh in pounds ? (Hint - 4.448 newtons)


That is pretty simple..... see W=Fh ... here w= work done; F= force and h=height!
We know W ; F  so we can easily calculate height...150=120h ...h=1.25!
It weighs 26 pounds!
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