QUIZ 2

The components of vector 𝐴⃗ are given as follows: Ax = 10.5 Ay = 15.2

What is the magnitude of the vector?

• 10.5

• 15.2

• 18.5

• 25.7

• 4.7

The components of vector 𝐴⃗ are given as follows: Ax = 5.6 Ay = -4.7.

What is the angle between vector 𝐴⃗ and positive direction of x – axis?

• 320

• 180

• 90

• 127

• 230

The components of vectors 𝐴⃗ and 𝐵⃗ are given as follows:

Ax = 5.1 Bx = -2.6

Ay = -5 By = -4.3

What is the magnitude of vector sum 𝐴⃗ + 𝐵⃗

• 5.1

• 2.5

• -9.3

• 9.6

• -3.8

The components of vector 𝑍⃗ are given as follows:

Zx = 10.7

Zy = 8.3

What is the magnitude of the vector?

• 7.8

• 9.5

• 14.2

• 16

• 13.6

The components of vector 𝑄⃗ are given as follow:

Qx = 23.5

Qy = 18.6

What is the measure of the angle, in degrees, that the resultant vector makes with the x-axis?

• 38.4

• 47.9

• 56.3

• 62

• 74.7

The components of vectors 𝑈⃗ and 𝑉⃗ are given as follow:

Ux = -8.6 Vx =10.7

Uy = 9.4 Vy = 4.1

What is the magnitude of the vector sum 𝑈⃗ + 𝑉⃗?

• 9.8

• 13.7

• 14.6

• 15.3

• 16.9

Which of the following statements is true?

• A scalar quantity can be added to a vector

• It is possible for the magnitude of a vector to equal zero even though one of its components is non-zero

• Scalar quantities are path dependent, while vectors are not

• Scalar quantities and vector quantities can both be added algebraically

• A scalar contains magnitude and direction while a vector does not.

The scalar dot product of 𝐴⃗ · 𝐵⃗ is closest to

• 15

• 10

• 17

• 21

• 25