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Author Question: A car travels 20 km west and then 20 km south. What is the magnitude of its displacement vector? ... (Read 113 times)

Mr. Wonderful

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on: Jul 29, 2018
A car travels 20 km west and then 20 km south. What is the magnitude of its displacement vector?
 
  A) 20 km B) 0 km C) 40 km D) 28 km

Question 2

According to the current theory or standard model of elementary particles, which one of the following is truly an elementary particle?
 
  A) electron
  B) neutron
  C) proton
  D) All of the above.
  E) None of the above.


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britb2u

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Reply #1 on: Jul 29, 2018
Answer to Question 1

D

Answer to Question 2

A


Mr. Wonderful

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Reply 2 on: Jul 29, 2018
YES! Correct, THANKS for helping me on my review

patma1981

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Reply 3 on: Yesterday
Excellent

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