This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A solid steel ball is dropped from a great height and when its speed reaches 20 m/s its acceleration ... (Read 62 times)

kellyjaisingh

  • Hero Member
  • *****
  • Posts: 540
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.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

huda

  • Sr. Member
  • ****
  • Posts: 304
Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

B


kellyjaisingh

  • Hero Member
  • *****
  • Posts: 540
Reply #2 on: Jul 28, 2018
TY


huda

  • Sr. Member
  • ****
  • Posts: 304
Reply #3 on: Jul 28, 2018
You're welcome


« previous next »
 

Did you know?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Great Laurel Great Laurel
This pediatric growth chart tracks the height and weight for girls ages 2–20. This pediatric growth chart tracks the height and weight for girls ages 2–20.
Calculation of body mass index. To determine your BMI, find the value for your height on the left ... Calculation of body mass index. To determine your BMI, find the value for your height on the left ...
Transposition of the great arteries. Transposition of the great arteries.
Great Diving Beetle Great Diving Beetle
Continuous Variation in Height (Males) Continuous Variation in Height (Males)
Video: Isovolumetric VC, Ventricular ejection, Isovolumetric & Passive ventricular filling

For a complete list of videos, visit our video library