2.) A child in a boat throws a 5.40-kg package out horizontally with a speed of 10.0m/s. Calculate the velocity of the boat immediately after, assuming it was initially at rest. The mass of the child is 26.0kg and that of the boat is 55.0kg.
6.) A 9500-kg boxcar traveling at 16m/s strikes a second car. The two stick together and move off with a speed of 6.0m/s. What is the mass of the second car?
11.) A 13-g bullet traveling 230m/s penetrates a 2.0-kg block of wood and emerges going 170m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges? Answer: 0.39m/s
Yay. Haha.
Credits to Beryllium. Again. 😀
http://i315.photobucket.com/albums/ll453/beryllium2010/MomentumHW.jpg
http://www.fileden.com/files/2007/7/13/1262241/hardcorephysics.pdf
Cesium '10 
