1. Not finding help here? Sign up for a free 30min 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!

What is the kinetic energy?

  1. Jan 26, 2009 #1
    1. The problem statement, all variables and given/known data
    A (n) 1880 kg car travels at a speed of 14.7 m/s. What is it's kinetic energy? Answer in units of J.

    2. Relevant equations

    Kinetic energy= 1/2mv^2

    3. The attempt at a solution
    1/2(188)(14.7)^2= 20312.46
    My answer is wrong though....
    What did i do? I keep getting all the kinetic problems i have wrong and i am following the formula....
     
  2. jcsd
  3. Jan 26, 2009 #2

    hage567

    User Avatar
    Homework Helper

    It's supposed to be 1880 kg, you used 188 kg.
     
  4. Jan 26, 2009 #3
    Ok so now i did .5(1880)(14.7)^2 = 203124.6
    It's still wrong...
     
  5. Jan 26, 2009 #4
    Why do you say its wrong? Is the answer your comparing it two 203000? or even 200000? It could be sig figs.
     
  6. Jan 26, 2009 #5
    Ahh i figured it out. I was submitting it in the wrong blank.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: What is the kinetic energy?
Loading...