SCI206 Lecture Notes - Moment Of Inertia, Tennis Ball, Figure Skating
Document Summary
What are the 3 ways to describe motion: position, velocity, and acceleration. How can we describe position: we use a vector, because it can tell us direction and distance (from some defined start point) What are the 2 parts of velocity: how fast we are going (speed, what direction we are going in (direction) It is how fast (and in what manner) our velocity is changing. What is newton"s first law: an object that is not subject to any net outside forces moves at constant velocity. What is newton"s second law: the force exerted on an object is equal to the product of the object"s mass times its acceleration, the acceleration is in the same direction as the force. For every force that one object exerts on a second object, there is an equal but oppositely directed force that the second object exerts on the first object.