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 73 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?

No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

Did you know?

The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

Did you know?

Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Great thinkers Great thinkers
Great Serpent Mound, Adams County, Ohio, Hopewell culture. Great Serpent Mound, Adams County, Ohio, Hopewell culture.
a) Appropriate chair height b) Chair is too low c) Chair is too high a) Appropriate chair height b) Chair is too low c) Chair is too high
A 4.0-kg block slides down a 35 incline at a constant speed when a 16-N force is applied acting ... A 4.0-kg block slides down a 35 incline at a constant speed when a 16-N force is applied acting ...
Frequency distribution of phenotypes from the possible offspring in Figure 5.7. Height of the offspr Frequency distribution of phenotypes from the possible offspring in Figure 5.7. Height of the offspr
Video: Chemical Synapse Animation

For a complete list of videos, visit our video library