Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Kinetic Energy

  1. Sep 18, 2006 #1
    I don't understand how kinetic energy works: How much kinetic energy does a car have when it moves at 100 km/hr, as compared with when it moves at 50 km/hr? The answer is 4 times as much, but why?
  2. jcsd
  3. Sep 18, 2006 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    What is the equation for kinetic energy?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook