Thu 18 Mar, 2010 01:31 pm - When using a hammer to drive a nail into wood, you have toswing the hammer through the air with a certain velocity. Because the hammer has both mass and velocity, it has momentum. Describe what... (view)
Wed 17 Mar, 2010 02:06 pm - During a shuttle launch, about 830,000 kg of fuel is burned in 8 minutes. The fuel provides the shuttle with a constant thrust, or push off the ground. How does Newton’s second law of motion... (view)
