Links
[1] https://hootsgo.org/?q=node/6384
[2] http://www.physicsclassroom.com/class/momentum/Lesson-1/Momentum-and-Impulse-Connection
[3] http://physics.info/momentum/summary.shtml
[4] http://en.wikipedia.org/wiki/Impulse_%28physics%29
[5] http://education-portal.com/academy/lesson/momentum-and-impulse-definition-theorem-and-examples.html
[6] http://zonalandeducation.com/mstm/physics/mechanics/momentum/introductoryProblems/momentumSummary2.html