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

Author Question: A race car circles 10 times around an 8-km track in 20 min. What is its average velocity per lap? ... (Read 18 times)

serike

  • Hero Member
  • *****
  • Posts: 542
on: Jul 27, 2018
A race car circles 10 times around an 8-km track in 20 min. What is its average velocity per lap?
 
  What will be an ideal response?

Question 2

A leaf falls from a tree. Compare its kinetic energy K to its potential energy U.
 
  A) K increases, and U decreases.
  B) K decreases, and U increases.
  C) K decreases, and U decreases.
  D) K increases, and U increases.
  E) K and U remain constant.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

miss.ashley

  • Sr. Member
  • ****
  • Posts: 371
Reply #1 on: Jul 27, 2018
Answer to Question 1

Average lap velocity is 0.

Answer to Question 2

A


serike

  • Member
  • Posts: 542
Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it

nguyenhoanhat

  • Member
  • Posts: 332
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

An example of color blindness test. A person with red-green color blindness would not be able to dis An example of color blindness test. A person with red-green color blindness would not be able to dis
Normal oxygen sensor frequency is from about one to five times per second. Normal oxygen sensor frequency is from about one to five times per second.
Average Surface Air Pressure – July Average Surface Air Pressure – July
Point of Intersection of 2 Circles Point of Intersection of 2 Circles
Suicide rates in Canada are more than three times higher for males than for females Suicide rates in Canada are more than three times higher for males than for females
Video: Cerebral Cortex Animation

For a complete list of videos, visit our video library