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Author Question: A solid steel ball is dropped from a great height and when its speed reaches 20 m/s its acceleration ... (Read 129 times)

kellyjaisingh

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on: Jul 28, 2018
A solid steel ball is dropped from a great height and when its speed reaches 20 m/s its acceleration downward is 7.35 m/s2 . What would be the terminal velocity in this situation?
 a. 80 m/s
  c. 40 m/s
  b. 60 m/s
  d. 20 m/s

Question 2

A sphere is dropped from a great height and when its speed reaches 20 m/s, its acceleration downward is 8.4 m/s2 . If the drag force is proportional to the square of the speed, what will be its acceleration downward when its speed reached 40 m/s?
 a. 2.6 m/s2
  b. 4.2 m/s2
  c. 8.0 m/s2
  d. 0 m/s2 because it has now reached terminal velocity.


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huda

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

C

Answer to Question 2

B


kellyjaisingh

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Reply #2 on: Jul 28, 2018
TY


huda

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Reply #3 on: Jul 28, 2018
You're welcome


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