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Author Question: You and Al are both floating freely in your spaceships. Suppose that Al is moving away from you at ... (Read 53 times)

jparksx

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on: Jul 27, 2018
You and Al are both floating freely in your spaceships. Suppose that Al is moving away from you at 85 km/hr. You throw a ball in his direction at a speed of 75 km/hr. According to Al, which of the following is going on?
 
  A) He sees you moving toward him at 85 km/hr and the ball moving toward him at 75 km/hr.
  B) He sees you moving away from him at 85 km/hr and the ball moving toward him at 10 km/hr.
  C) He agrees that he is moving at 85 km/hr and the ball is moving at 75 km/hr while you are standing still.
  D) He sees you moving away from him at 85 km/hr and the ball moving away from him at 10 km/hr.

Question 2

Which is the MOST important property of the element carbon that makes it ideal as a fundamental building block of biological molecules?
 
  A) it is a very stable element
  B) it is the only element capable of bonding to itself
  C) it is a common element
  D) it readily forms chemical bonds with itself and other elements, allowing a wide variety of complex molecules to form


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diesoon

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Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

D


jparksx

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Reply #2 on: Jul 27, 2018
Thanks


diesoon

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Reply #3 on: Jul 27, 2018
Welcome :)


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