PHYS 2101 Lecture : Lecture 13
Document Summary
9 : center of mass & linear momentum. 9 : system of particle & examples of conservation of momentum & impulse/collisions. 9: more examples of inelastic and elastic collisions. A shell is shot with an initial speed of 20 m/s at an angle of 60 . The shell explodes into two fragments of equal mass. One fragment, whose speed immediately after the explosion is zero, falls vertically. Suppose a ping-pong ball and a bowling ball are rolling toward you. Both have the same momentum, and you exert the same force to stop each. It takes less time to stop the ping-pong ball. It takes more time to stop the ping-pong ball. An isolated event in which two or more bodies exert relatively strong forces on each other for a relatively short time. However in both we assume closed and isolated systems. Impulse acting on it p f p i p r d p r d.
