Physics 30 - April 26

Today we started Unit 4 on gravitational motion.  We will begin this examination by looking at motion of objects close to the surface of the Earth.  This type of motion is called projectile motion.  The key to solving problems involving projectiles is to break the motion up into 2 separate parts - a horizontal and vertical part.  Since the only force acting on a projectile after it is gravity, the only motion that is changing then is the vertical motion.  The horizontal motion is uniform motion and the vertical motion is accelerated.  We looked at a couple of demonstrations to display this concept.  We didn't have time however to do any examples.  There is a new powerpoint we are using called Unit 4 Notes found in the Unit 4 folder of the Physics 30 Course Notes link.  We simply went through slides 1-7 today.  Tomorrow we will start looking at examples of how to solve problems involving projectile motion.