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 64 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
:D TYSM

adf223

  • Member
  • Posts: 304
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.

Did you know?

In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

The lepidosaur kinetic skull The lepidosaur kinetic skull
Collision Between Two Asteroids Collision Between Two Asteroids
Marine myths measured Marine myths measured
Place the tennis balls in a sock on the floor behind you, then lie with the middle of your thoracic ... Place the tennis balls in a sock on the floor behind you, then lie with the middle of your thoracic ...
After all valves have been properly measured and adjusted as necessary, start the reassembly process ... After all valves have been properly measured and adjusted as necessary, start the reassembly process ...
Pasta with meat balls Pasta with meat balls
Video: Bone elongation - processes at the epiphyseal plate

For a complete list of videos, visit our video library