Lecture_3-Position_Vector___Force_Vector-1.ppt

Lecture_3-Position_Vector___Force_Vector-1.ppt - Force...

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Force Vectors Lecture 3-Position Vector and Force Vector  Directed Along a Line  (Sections 2.7 and 2.8)
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Reading Check-1 A force of magnitude F, directed along a unit  vector  U , is given by  F  = ______ . A) F ( U ) B)  U  / F C) F /  U D) F +  U E)  F –  U
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Reading Check-2 If the position vector  r  has a magnitude of r, then  the unit vector U r  is given by= ______ . A)  ×  r B)  r  •  r C)  r  / r D)  r  + r E)   r  – r
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Concept Question-1 Determine the length of the rope AB. A.) 24.85 feet B.) 23.85 feet C.) 25 feet D.) Not enough information
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Concept Question -2 A position vector, r PQ , is obtained by A) Coordinates of Q minus coordinates of P B) Coordinates of P minus coordinates of Q C) Coordinates of Q minus coordinates of the origin D) Coordinates of the origin minus coordinates of P
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Concept Question-3 P and Q are two points in a 3-D space. How are the position vectors r
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Lecture_3-Position_Vector___Force_Vector-1.ppt - Force...

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