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 2 gravitational p.e. Δ g =mgΔ U h Δ =−⌠ · U F ds ⌡ F =−∇U v
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Assignment – Physics 1 1. Two carts‚ one twice the mass of the other‚ experience the same force for the same time. What is their difference in momentum? What is their difference in kinetic energy? 2. A 12 g bullet is fired horizontally into a 96 g wooden block initially at rest on a horizontal surface. After impact‚ the block slides 7.5 m before coming to rest. If the coefficient of kinetic friction between block and surface is 0.60‚ what was the speed of the bullet immediately before impact
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Physics Preliminary 8.2 The World Communicates 1. The wave model can be used to explain how current technologies transfer information 1. Describe the energy transformations required in one of the following: – Mobile telephone – Fax/modem – Radio and television A. An energy transformation is a change in the type of energy‚ for example a change from sound energy to electromagnetic waves. Relating this to the mobile telephone‚ it undergoes basic energy transformations of‚ sound wave
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[pic] The product of average force and the time it is exerted is called the impulse of force. From Newton’s second law [pic] the impulse of force can be extracted and found to be equal to the change in momentum of an object provided the mass is constant: |[pic] |Calculation | The main utility of the concept is in the study of the average impact force during collisions. For collisions‚ the mass and change in velocity are often
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Physics in Everyday Life 1 Just about everything you do from moving to eating to listening to music involves physics. Now that I have really explored them I think it is hard to go about our day and not do something that involves physics. Some of the things I will talk about are getting out of bed‚ the eye and how eye glasses help a person see better‚ speakers‚ the Frisbee‚ sailing‚ and the pulleys I use to get my jeep unstuck in the mud when I ride in the woods. All of these
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successful steam turbine appeared at the end of nineteenth century when Gustaf De Laval designed a high speed turbine built on the principle of reaction turbine in 1883. Before this in 1629 G. Branca developed the first impulse turbine. Branca’s impulse turbine and Hero’s reaction turbine are shown in Fig. 1.1. Figure 1.2 Hero and Branca’s turbine. In nineteenth century some more steam turbines were developed by Sir Charles A. Parsons and C.G. Curtis which gave a filip to the development
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FORM 4 | Chapter 1 | INTRODUCTION TO PHYSICS | | FARHAH FADZLI | [Pick the date] | [Type the abstract of the document here. The abstract is typically a short summary of the contents of the document. Type the abstract of the document here. The abstract is typically a short summary of the contents of the document.] | Derived quantities (speed is derived from dividing distance by time) Derived unit Combination of base units trough multiplying and/or dividing them Example 1:
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Biomechanical analysis of bicycle-kick in soccer ball By: Mohammad M. Al Saaid Graduat Student - ME 5840 Instroctor: Prof. Peter Jenkins List of Symbols: a Acceleration α Angular Acceleration V Velocity F Force r Radius of ball FA Impales force of Player A FB Impales force of Player B AFB
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Ever since cars were invented in the early 20th century‚ there have been road fatalities. Advances in car safety technology have seen a diminishing exponential curve in casualties suffered on the road. The first invention was the seatbelt‚ by George Cayley in the late 1900s. The next major advance was with the airbag‚ by John Hetrick in 1952. A patent for the design was marketed for automobiles in 1967. The combination of all safety devices located in cars contribute to the wellbeing of the driverThe
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jet 4.2 Venturi meter 5.Conclusion 6.References Appendices Abstract Rate of flow was measured in two different experiments‚ Impact of a water jet and flow through a Venturi meter. The main objective was to calculate the change in momentum and energy loss in flow which was put under pressure. The experiment showed that results obtained can significantly defer from the theory if energy losses are not neglected. 1.Introduction Water is the most commonly used resource of renewable
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