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

Author Question: An object of mass m moving at speed v strikes and object of mass 2m which had been at rest. The ... (Read 242 times)

sarasara

  • Hero Member
  • *****
  • Posts: 521
An object of mass m moving at speed v strikes and object of mass 2m which had been at rest. The first object bounces backward along its initial path at speed v. Is this collision elastic, and if not, what is the change in kinetic energy of the system?
 a. The collision is elastic. b. The kinetic energy decreases by mv2.
  c. The kinetic energy decreases by 1/2 mv2.
  d. The kinetic energy increases by mv2.

Question 2

Of the following substances, which one contains the highest density of free electrons?
 a. glass
  c. iron
  b. hard rubber
  d. amber



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

amcvicar

  • Sr. Member
  • ****
  • Posts: 341
Answer to Question 1

D

Answer to Question 2

C





 

Did you know?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Did you know?

Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

For a complete list of videos, visit our video library