An airplane undergoes the following displacements, all at the ...

[809779]

An airplane undergoes the following displacements, all at the same altitude: First, it flies 59km in a direction 30.0 east of north. Next, it flies 58.0km due south. Finally, it flies 100km 30.0 north of west.
 
  Use components to determine how far the airplane ends up from its starting point.
  A) 71.5 km B) 73.0 km C) 68.7 km D) 74.4 km E) 70.1 km

Question 2

Einstein proposed two basic principles or laws as the foundation of his special theory of relativity. One of these principles is intuitively plausible, while the other seems quite implausible or odd to our intuitions.
 
  The principle that is intuitively plausible is
  A) the principle of time dilation.
  B) the principle of inertia.
  C) the principle of relativity.
  D) the principle of the constancy of lightspeed.
  E) E=mc2.

[katara]

Answer to Question 1

A

Answer to Question 2

C

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[katara]

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