Mechanics: Work‚ Energy‚ Momentum‚ Kinematics of Rotational Motion Jacque Lynn F Gabayno‚ Ph.D. Lecture Notes 1 Work as defined in Physics r r W =F s Force× Displacement = Force × Displacement *SI Units: 1 N.m = 1 Joules (i.e. same as the unit of energy) 2 Recall “Dot Product” The dot product allows us to multiply two vectors to get something that is SCALAR. r A r A For a constant force: r r r B = A B cos ! r B = Ax Bx + Ay By + Az Bz Only those along the direction of
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The conversion of potential energy to kinetic energy is what drives the roller coaster‚ and all of the kinetic energy you need for the ride is there once the coaster goes down the very first hill. Once the coaster gets going‚ there are different types of wheels that help keep the ride smooth. Roller coasters don’t have engines. But they do have energy. Once all passengers are in the coaster‚ the carts get released and begin to roll down the first hill. The force of gravity makes them accelerate downwards
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2/20/2014 Frequently Used Equations - The Physics Hypertextbook Frequently Used Equations Mechanics velocity Δ s v= Δ t ds v= dt acceleration Δ v a= Δ t dv a= dt equations of motion v = 0+at v x =x0+v 0 +½ 2 t at weight W =m g momentum p =m v dry friction ƒ μ =N centrip. accel. v2 ac = r 2 ac =−ω r impulse J =F Δ t impulse–momentum F Δ= Δ t m v J =⌠ dt F ⌠ dt =Δ F p ⌡ kinetic energy potential energy ⌡ K =½ mv
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M11/4/PHYSI/SP2/ENG/TZ1/XX 22116511 PHYSICS STANDARD LEVEL PAPER 2 Candidate session number 0 0 Wednesday 11 May 2011 (afternoon) Examination code 2 1 hour 15 minutes 2 1 1 – 6 5 1 1 INSTRUCTIONS TO CANDIDATES • • • • • Write your session number in the boxes above. Do not open this examination paper until instructed to do so. Section A: answer all questions. Section B: answer one questions. Write your answers in the boxes provided
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Physics in My Daily Life “Write an essay of 1500 words‚ double spaced‚ in standard fonts ‚ giving credible references on the use of physics in your daily activity. You need to mention 5 or more activities where physics is used. Please follow the APA format.” As a senior in college‚ I lead a rather busy life. My days usually follow the same routine and pattern. I wake up at 7am everyday‚ so I am rather tired. To get going in the morning‚ I usually drink a cup of coffee. Then I attend my classes
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The Physics of Balls Bouncing off at Surfaces Leader: Mr. Edrian Pantas Contador‚ Love S. Members: Espiritu‚ Ian Timothy Ecube‚ Lynn Kristine Magangcong‚ Ahlya Oliman‚ Genie Rose Chapter 1 Introduction Bouncing ball physics is an interesting subject of analysis‚ demonstrating several interesting dynamics principle related to acceleration. Almost everybody‚ at some point in their lives‚ has bounced a rubber ball against the wall or floor and observed its motion. Normally
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.Physics is the field of scince that controls the Earth‚ the Moon‚ the Sun and the Universe It is the science of matter and its motion‚ space-time and energy. Physics describes many forms of energy - such as kinetic energy‚ electrical energy‚ and mass; and the way energy can change from one form to another. Everything surrounding to us is made of matter and Physics explains matter as combinations of fundamental particles which are interacting through fundamental forces. It will not be an exaggeration
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to who is the rightful inventor of this object‚ most sources claim that Newton’s Cradle was invented by Marius Morin and was later coined “Newton’s Cradle” by English actor in 1967. This popular executive toy exhibits various concepts related to physics including friction‚ collisions‚ conservation of energy‚ and conservation of momentum. Momentum is force of moving objects. It can be measured by multiplying an object’s mass and velocity. Basically‚ the concept of conservation of momentum is that
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Name: ____________________________ Date: ____________________Period:____________ PHYSICS FINAL EXAM REVIEW Chapters 5-13 Ways to study for your exam: * Review past tests‚ quizzes‚ homework assignments‚ and vocabulary sheets * Review notes * Read textbook chapters (especially summary pages at the end of each chapter) * Complete this Review guide * Write practice essay questions and have your instructor grade them You should be able to: * Define all vocabulary words
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Physics G Unit 6 – Momentum Internet Lab – Momentum and Collisions Name: Date: Period: Website: http://phet.colorado.edu/ Play with the Sims Physics Motion Collision Lab Introduction: When objects move‚ they have momentum. Momentum‚ p‚ is the product of an object’s mass (kg) and its velocity (m/s). The unit for momentum‚ p‚ is kg·m/s. During a collision objects transfer momentum to each other‚ resulting in different motions than before the collision. In this activity you will study
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