What is the change in momentum of a penguin that has a mass of 1.5 kg and a velocity starts at 1.2 m/s and ends at 2.8 m/s?

hello,

as we don't know if g(x) is continue,

answer b

f(x)=2x²-8x+1=2(x²-4x+4)+1-8=2(x-2)²-7

vertex is (2,-7) ( a minimum since coefficient of x² is > 0)

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