Vector C is multiplied by the scalar −2.

Physics
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1. https://tcan4424-oakcliff-ccl.gradpoint.com/Resour... Vector C is multiplied by the scalar −2. What angle does the new vector make with the y-axis?

2. The components of vector A and vector B are:


Ax = + 7.6 Bx = +15.2
Ay = -9.2 By = −18.4

Which equation describes the relationship between the two vectors?

a. 68° 

b. B = A

c. B = A + (2,0)

d. B = 7.6A

e. B = 2A

3.What are the components of a vector with a magnitude of 4.00 and a direction of -112°?

May 18th, 2015

1. The new angle making with the y-axis will be the same as 22o .

2. Since Bx = +15.2 = 2 x (+7.6) = 2Ax and By = -18.4 = 2 x (-9.2) = 2Ay , we can conclude that the relationship is B = 2A.

    Answer:  e. B = 2A

3. x-component = 4.00 x cos(-112°) = 4.00 x (-0.375)  = -1.5

  y-component = 4.00 x sin(-112°) = 4.00 x (-0.927)  = --3.7

May 18th, 2015

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May 18th, 2015

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