This topic contains a solution. Click here to go to the answer

Author Question: When an object is solely under the influence of conservative forces, the sum of its kinetic and ... (Read 65 times)

Kthamas

  • Hero Member
  • *****
  • Posts: 546
When an object is solely under the influence of conservative forces, the sum of its kinetic and potential energies does not change.
 
  A) True B) False

Question 2

Two identical balls are thrown directly upward, ball A at speed v and ball B at speed 2v, and they feel no air resistance. Which statement about these balls is correct?
 
  A) Ball B will go four times as high as ball A because it had four times the initial kinetic energy.
  B) Ball B will go twice as high as ball A because it had twice the initial speed.
  C) The balls will reach the same height because they have the same mass and the same acceleration.
  D) At their highest point, the acceleration of each ball is instantaneously equal to zero because they stop for an instant.
  E) At its highest point, ball B will have twice as much gravitational potential energy as ball A because it started out moving twice as fast.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

djofnc

  • Sr. Member
  • ****
  • Posts: 318
Answer to Question 1

A

Answer to Question 2

A





 

Did you know?

The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

Did you know?

Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Did you know?

Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

Did you know?

Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

For a complete list of videos, visit our video library