A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Which of these follows from Newton's laws about the energy of a moving object?

  • This Question is Closed
  1. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    A. The mechanical energy remains the same if there are only conservative forces acting B. The total of all forms of energy is always constant C. the kinetic energy of an object remains the same if friction is absent D. the total mechanical energy of an object is always constant

  2. Michele_Laino
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I think the first option, since we can write the subsequent chain of equalities, for a free falling particle whose mass is m: \[PE = mgh = mg\frac{1}{2}g{t^2} = \frac{1}{2}m{\left( {gt} \right)^2} = \frac{1}{2}m{v^2} = KE\]

  3. Michele_Laino
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    keep in mind that gravitational force, is a conservative force

  4. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ohh okay!!! thank you:)

  5. Michele_Laino
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    :)

  6. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.