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## Physics 108

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**Physics 108**Introduction to Engineering/Physics**Objectives of Physics 108**• Learn about the different engineering disciplines • Learn about professionalism in engineering • Become a better problem solver • Develop teaming skills**Why Active/Collaborative Learning?**• Active • Countless studies have shown improvement in: • short-term retention of material, • long-term retention of material, • ability to apply material to new situations • Collaborative • Engineering teams are used in industry and usually make the best use of time**Consulting**Astronomy Architecture Mechanical Civil Electrical Why Physics? Engineering**Review**Units of Measure See Notes**Chapter 1**Introduction to Vectors**Scalar Quantity**• a quantity that has magnitude but not direction • Vector Quantity • a quantity that has both magnitude and direction**Vector Quantities**• force • e.g. 20 Newtons Eastward • velocity • e.g. 20 meters/second North • acceleration • e.g. 9.8 m/s2 downward**Scalar Quantities**• length • e.g. 93,000,000 miles • mass • e.g. 180 kg • speed • e.g. 186,000 miles/second**Vector**• an arrow drawn to scale used to represent a vector quantity • vector notation**Resultant**• the sum of vectors • Methods of Vector Addition • tip-to-tail method (polygon method) • component method**Tip-to-Tail Method**• Example 1: Add these vectors using the tip-to-tail method. +**+**= Tip to Tail Method**Component Method**y x**Notes on Components**Components are vectors**q**Lengths of Components Ax = A cos q Ay = A sin q**Unit Vector**• magnitude of 1 and a direction