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Author Question: A roller coaster starting from rest descends 35 meters in its initial drop and then rises 23 meters ... (Read 72 times)

mpobi80

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on: Jul 29, 2018
A roller coaster starting from rest descends 35 meters in its initial drop and then rises 23 meters when it goes over the first hill, which has a circular shape over the top.
 
  If a passenger at the top of the hill feels an apparent weight equal to one-half of her normal weight, what is the radius of curvature of the first hill? Neglect any frictional losses.

Question 2

From the Earth, the Earthlings see the Enterprise approaching from the west at 0.800c and the Klingons approaching from the east at 0.900c. What speed, in terms of the speed of light, does the crew of the Enterprise measure for the Klingon ship?
 
  What will be an ideal response?


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snackralk

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

48 m

Answer to Question 2

0.988c


mpobi80

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Reply #2 on: Jul 29, 2018
Thanks


snackralk

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Reply #3 on: Jul 29, 2018
Welcome :)


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