Author Question: A ball is thrown at an original speed of 8.0 m/s at an angle of 35 above the horizontal. If there is ... (Read 90 times)

mspears3

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A ball is thrown at an original speed of 8.0 m/s at an angle of 35 above the horizontal. If there is no air resistance, what is the speed of the ball when it returns to the same horizontal level?
 
  A) 4.0 m/s
  B) 8.0 m/s
  C) 16 m/s
  D) 9.8 m/s

Question 2

Which of following statements about the image formed by a single concave lens are true? (There could be more than one correct choice.)
 
  A) The image is always real.
  B) The image is always virtual.
  C) The image is always inverted.
  D) The image is always upright.
  E) The image is always smaller than the object.


alvinum

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Answer to Question 1

B

Answer to Question 2

B, D



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