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Author Question: If you shout across a canyon and the echo returns in four seconds, how far away is the other side? ... (Read 33 times)

dejastew

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on: Jul 28, 2018
If you shout across a canyon and the echo returns in four seconds, how far away is the other side? (Velocity of sound in air is 300 m/s).
 a. 150 b. 300 c. 600 d. 1200 e. 2400 meters

Question 2

A race car moving with a constant speed of 60 m/s completes one lap around a circular track in 50 s. What is the magnitude of the acceleration of the race car?
 a. 8.8 m/s2
  b. 7.5 m/s2
  c. 9.4 m/s2
  d. 6.3 m/s2
  e. 5.3 m/s2


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Joy Chen

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Reply #1 on: Jul 28, 2018
Answer to Question 1

c

Answer to Question 2

B


dejastew

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Reply #2 on: Jul 28, 2018
Both answers were spot on, thank you once again


Joy Chen

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Reply #3 on: Jul 28, 2018
Great! Please up vote :D


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