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Mastering Physics Pearson <MP 6 MasteringPhysics: MP 6 Item 7 Vector A has a magnitude of 3.0 units and points in the negativ
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Answer #1

here,

A = - 3 i units

B = (5 i + 7 j) units

A.B = ( - 3 i ) .(5 i + 7 j)

A.B = ( -3) * ( 5) units

A.B = - 15 units^2

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