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Author Question: A race car circles 10 times around an 8-km track in 20 min. What is its average velocity per lap? ... (Read 21 times)

serike

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on: Jul 27, 2018
A race car circles 10 times around an 8-km track in 20 min. What is its average velocity per lap?
 
  What will be an ideal response?

Question 2

A leaf falls from a tree. Compare its kinetic energy K to its potential energy U.
 
  A) K increases, and U decreases.
  B) K decreases, and U increases.
  C) K decreases, and U decreases.
  D) K increases, and U increases.
  E) K and U remain constant.


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miss.ashley

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

Average lap velocity is 0.

Answer to Question 2

A


serike

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Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

xiaomengxian

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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