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

Author Question: After an elastic collision of two balls, the kinetic energies of the two balls are measured to be ... (Read 54 times)

schs14

  • Hero Member
  • *****
  • Posts: 569
on: Jul 28, 2018
After an elastic collision of two balls, the kinetic energies of the two balls are measured to be 12J and 24J. What can be said about the kinetic energy of the two balls before the collision?
 a. nothingnot enough information is given
  b. the balls had the same energies, 12J and 24J respectively
  c. the total kinetic energy of the two balls was 36J
  d. none of the above

Question 2

A person runs up a long flight of stairs in 10 seconds. If the person's weight is 600 N and the vertical height of the stairs is 20 meters, the person's power output is
 a. 0
  b. 3 W
  c. 30 W
  d. 1,200 W
  e. 12,000 W


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Juro

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

D


schs14

  • Member
  • Posts: 569
Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

Perkypinki

  • Member
  • Posts: 339
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

Did you know?

The longest a person has survived after a heart transplant is 24 years.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Did you know?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

Skin signs are objective evidence of an illness or disorder. They can be seen, measured, or felt. Skin signs are objective evidence of an illness or disorder. They can be seen, measured, or felt.
Kinetic Sand Kinetic Sand
Particles measured, 1970 - 2008 and Trend in Organic Compound 1990 - 2007 Particles measured, 1970 - 2008 and Trend in Organic Compound 1990 - 2007
Elastic Rebound Elastic Rebound
Pasta with meat balls Pasta with meat balls
Swedish meat balls with peas Swedish meat balls with peas
Video: Basic rhythm - control centers in medulla oblongata, spirograph and normal tidal cycle

For a complete list of videos, visit our video library