PHY 2020 Lecture Notes - Lecture 2: Equals Sign, Pythagorean Theorem

• School: University of Florida
• Department: Physics
• Course: PHY 2020
• Professor: Sergei Obukhov

Document Summary

2. 1: scalar quantities have no direction attached, but have a magnitude (size). Ex: mass: vector quantities have a direction and a magnitude. Ex: velocity: a vector is often showed as an arrow. |a| = a (magnitude of a) direction as well as magnitude). The third side of the triangle is vector c (if a + b = 2. 2: sin = opp/hyp cos = adj/hyp tan = opp/adj, understand how to do right angle trigonometry. Then use pythagorean theorem: ex: th e c o m p o n e n ts o f a ve c to r v c a n b e writte n a s ( v_x, v_y, v_z).