1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

How can I calculate the joules for speeding objects?

  1. Sep 16, 2012 #1
    Ok,lets say an object is moving at a constant speed of Mach 7 for 20000ft. The weight for the object is 2000 lbs.

    What formulas could I use to calculate the energy for accelerating objects,or this one in particular?
     
  2. jcsd
  3. Sep 16, 2012 #2

    Doc Al

    User Avatar

    Staff: Mentor

    The formula for kinetic energy is KE = 1/2mv2.

    m = mass, in kg
    v = speed, in m/s

    KE = kinetic energy, in joules
     
  4. Sep 16, 2012 #3

    DrGreg

    User Avatar
    Science Advisor
    Gold Member

    By the way, something moving at constant speed is not accelerating!
     
  5. Sep 16, 2012 #4
    Thank you I just realized my error,but I was asking for general equations when I said "accelerating objects".
     
  6. Sep 16, 2012 #5
    KE = .5m(v0^2) + mas = .5m(v0^2) + Fs = .5m(v0^2) + F(v0t + .5(a)(t^2)) ?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: How can I calculate the joules for speeding objects?
Loading...