Unit 5- Forces of Equilibrium

Today in class we learned about Forces of Equilibrium.  I took a picture of an expo pen on a paper which is one of the experiments we did today.  I always thought that the magic trick with the heavy fragile glass plates on top the table cloth was super cool but now that I understand the physics of it I feel dumb.  I learned that force is a vector quantity which means that it contains both magnitude and direction.  Today we did many problems using trigonometry to solve for direction (x and y axis) and magnitude (muchness, degree).  It is a lot of steps but makes sense.  We learned about the first Newtons Law which is also known as the Law of Inertia that states that an object in motion will tend to stay in motion unless acted upon by an outside unbalanced force.  Which is definitely true is many different senarios.  For example if you throw a baseball in one direction and no unbalanced forces act upon it nothing will happen (wind, gravity, hitter).   I am looking forward to expanding  tomorrow and learning 2 more Newton Law's.