Vectors Answers
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1
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Study the vector diagram.
A
8 mB
16 mC
60 mD
136 m2
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The angle a vector makes with the x-axis of a coordinate system must be what size in order to make one or more of its components negative?
A
less than 30 degreesB
between 30 and 60 degreesC
between 61 and 90 degreesD
greater than 90 degrees3
The diagram shows components that have been added together to form Rx and Ry. Rx and Ry are the components of the resultant vector.
A
R2 = Rx2 + Ry2B
R = Rx + RyC
R = Rx(cosθ)D
R = Rx(sinθ)4
A jogger runs 5.0 km on a straight trail at an angle of 60° south of west. What is the southern component of the run rounded to the nearest tenth of a kilometer?
A
-4.3 kmB
-2.5 kmC
2.5 kmD
4.3 km5
Which equation represents the Pythagorean theorem, which can be used to find the magnitude of resultant vectors?
A
R = A + BB
R = A x BC
R2 = A2 x B2D
R2 = A2 + B27
differenceproductquotientsum
A
differenceB
productC
quotientD
sum
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