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Author Question: A helicopter is flying horizontally with a speed of 444 m/s over a hill that slopes upward with a 2 ... (Read 221 times)

notis

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on: Jul 29, 2018
A helicopter is flying horizontally with a speed of 444 m/s over a hill that slopes upward with a 2 grade (that is, the rise is 2 of the run).
 
  What is the component of the helicopter's velocity perpendicular to the sloping surface of the hill? A) 8.9 m/s
  B) 220 m/s
  C) 435 m/s
  D) 444 m/s

Question 2

What should be the angle between the reflecting surfaces of two plane mirrors in order for every incident beam to be parallel to its reflected beam?
 
  A) 0
  B) 30
  C) 45
  D) 60
  E) 90


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bookworm410

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

A

Answer to Question 2

E


notis

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Reply 2 on: Jul 29, 2018
Excellent

daiying98

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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