Vector = 1

question 67

Multiple Choice

Vector = 1.00 î + -2.00 ĵ and vector = 3.00 î + 4.00 ĵ. What are the magnitude and direction of vector = + ?

• A) 7.21 in a direction 33.7° counterclockwise from the positive x axis
• B) 6.00 in a direction 63.4° counterclockwise from the positive x axis
• C) 4.47 in a direction 6.34° counterclockwise from the positive x axis
• D) 4.47 in a direction 26.6° counterclockwise from the positive x axis
• E) 7.21 in a direction 56.3° counterclockwise from the positive x axis

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Definitions:

Phalanges

The bones of the fingers and toes in humans and other vertebrates.

Proximal End

The part of a limb or structure that is closest to the center of the body.

Radius

The radius is one of the two large bones of the forearm, located on the thumb side when the palm is facing up.

Ulna

The longer of the two bones in the forearm, running parallel to the radius and forming the elbow joint at its larger end.