« previous next »

Author Question: An object hits a wall and bounces back with half of its original speed. What is the ratio of the ... (Read 88 times)

roselinechinyere27m

  • Hero Member
  • *****
  • Posts: 557
on: Jul 29, 2018
An object hits a wall and bounces back with half of its original speed. What is the ratio of the final kinetic energy to the initial kinetic energy of the object?
 
  A) 1/2
  B) 1/4
  C) 1/8
  D) 1/16

Question 2

If you weighed 800 newtons on Earth, how much would you weigh at 6000 km one Earth radius above the surface of Earth?
 
  A) 200 newtons
  B) 3200 newtons
  C) 800 newtons
  D) 1600 newtons
  E) 400 newtons


jlaineee

  • Sr. Member
  • ****
  • Posts: 380
Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

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?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

Information flows from the nucleus to the cytoplasm and back. Information flows from the nucleus to the cytoplasm and back.
Muscles of the Torso Back Muscles of the Torso Back
Posterior half of the brain. Posterior half of the brain.
Cell Wall Cell Wall
Wall of the Colon Wall of the Colon
Astronaut Rachel leaves Earth in a spaceship at a speed of 0.960c relative to an observer on ... Astronaut Rachel leaves Earth in a spaceship at a speed of 0.960c relative to an observer on ...
Video: Introduction to Autism

For a complete list of videos, visit our video library