October 22, 2009

Today in class we started by talking about why it was easier to draw a acceleration vs. time graph, when starting with a velocity vs. time graph, than drawing a position vs. time graph. We concluded that it was easier because when you are drawing an x vs. t graph you have to think backwards. After that we watched a short video on working in space. The astronauts were having trouble working outside of the space shuttle because of Newton's second law. It states that for every action there is an equal and opposite reaction. When the astronauts were in space there is not any gravity to anchor them to any surface. On earth we are always touching the ground creating a base for us. When the astronauts would try to spin a wheel, they would spin in the opposite direction, making work almost impossible. Since then they have found ways for the astronauts to anchor themselves on the space shuttle. The next blogger will be Melissa.