References

    1.) http://hyperphysics.phy-astr.gsu.edu/hbase/newt.html
    2.) Understanding Car Crashes: It's Basic Physics
    3.)http://www.injurytv.com/doctors/holcombe.html
    4.) Fast A, Sosner J, Begeman P. et al. Lumbar spinal strains associated     with whiplash injury. American Journal of Physical Medicine and                 Rehabilition 2002;81:645-650
    5.) http://www.physicsclassroom.com/class/momentum/u4l1a.cfm
    6.) Physics Giancoli sixth edition textbook