Whiteboard Protocol n Bell work Give two examples

Whiteboard Protocol n Bell work: Give two examples of mechanical physics. n OBJECTIVE: n TLW how to determine the different kinds of physics. n CLASSWORK: Identifying different kinds of Physics n HOMEWORK: Physics book page 9; questions 1 -5 n EXIT TICKET: What is thermodynamics? 1/22/2022 http: //abynum. weebly. com 1

Mathematical Review n The following formulas are used to help us solve Physics problems: n F = ma ( Newton’s Second Law) n PE = mgh ( Potential formula) n KE = ½ mv 2 ( Kinetic energy) n W = f xd ( Work) n Vavg = d/t ( Velocity) n Aavg = v/t (Acceleration) 1/22/2022 http: //abynum. weebly. com 2

Math Review n Suppose you had a problem in physics and you had to solve for mass in the potential energy formula. ( PE = mgh) n Step 1 …. . PE = mgh n Step 2 …. . Rewrite the formula: mgh = PE n Step 3 …. Divide both sides by gh n Step 4 …. m = PE/gh 1/22/2022 http: //abynum. weebly. com 3

Math Review n Suppose you wanted to solve for acceleration in the formula (F = ma): n Step 1 …. Write the formula: F = ma n Step 2 …. Rewrite the formula as: ma = F n Step 3 …. Divide both sides by a: n Step 4 …. After dividing, then the formula is m = F/a 1/22/2022 http: //abynum. weebly. com 4

Lesson 1 What is Physics? “Forces in action”

What is Physics? n Many people consider physics as a science that evolves many formulas. n Physics is the study of the physical world. n There would be no inventions of appliances, tools and other things without physics. 1/22/2022 http: //abynum. weebly. com 6

What is Physics? Vibrations (Radio speakers) Optic (headlights) Thermodynamics (coolants) Electromagnetism Battery, starter Mechanics ( motion of wheels) 1/22/2022 http: //abynum. weebly. com 7

The Different kinds of Physics Name Examples Mechanics Motion and its causes, interactions between objects Falling objects, friction, weight, spinning objects Thermodynamics Heat and temperature Melting and freezing processes, engines, refrigerators Specific types of respective motions Springs, pendulums, sound light Mirrors, lenses, color, astronomy Electromagnetism Electricity, magnetism, and light Electrical charge, circuitry, permanent magnets, electromagnets Relativity Particle moving at any speed, including very high speeds Particle collisions, particles accelerator, nuclear energy Behavior of submicroscopic particles http: //abynum. weebly. com The atom and its parts Vibrations and wave Phenomena Optics Quantum mechanics 1/22/2022 Subjects 8

What is Physics? n Scientific Method Steps 1. Propose a hypothesis. 2. Design and perform an experiment to test the hypothesis. 3. Analyze your data to determine whether to accept or reject the hypothesis. 4. If necessary, propose and test a new hypothesis. 1/22/2022 http: //abynum. weebly. com 9

What is physics? Physics Models n A pattern, plan, representation, or description designed to show the structure or workings of an object, system or concept. 1/22/2022 http: //abynum. weebly. com 10

What is Physics? a. Name two area of physics. b. Identify the area of physics that is most relevant to each of the following situations. a. b. c. 1/22/2022 A high school football Food preparation Playing in the school band http: //abynum. weebly. com 11

What is Physics? Summative: Turn to page 9 in your textbook and do questions 1 -5 1/22/2022 http: //abynum. weebly. com 12