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Why Take Physics?

Why Take Physics?. What is Physics?. Physics is the study of matter and energy and their relationship. Math is a required skill for taking physics. Physics isn’t a walk in the park, you must have good work ethics to be successful. Everything has to do with Physics!.

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Why Take Physics?

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  1. Why Take Physics?

  2. What is Physics? • Physics is the study of matter and energy and their relationship. • Math is a required skill for taking physics. • Physics isn’t a walk in the park, you must have good work ethics to be successful.

  3. Everything has to do with Physics! • There are so many activities that occur everyday that have to do with physics. • People who do not take physics really have no understanding of the science that occurs behind these events. • Physics can teach one what happens when say two cars collide or two people of different masses get on a see saw. • Physics is a very vital topic to know if you want to be knowledgeable about the world and what is going on around you.

  4. Speed and Acceleration

  5. Speed, also known as velocity, is how fast an object is moving. Velocity = Distance x Time Distance being how far the object is from a given point. Time being how long it takes for the object to reach that point. A = V/ T The velocity is the final velocity minus the initial velocity. The time is how long it takes this change to occur (final time-initial time). Velocity and acceleration are vector quantities. They can be negative values depending on their direction. • http://www.fearofphysics.com/Xva/xva.html Knowing about speed and acceleration can help you when it comes to driving a car. It will help you understand more about how long it will take you to change speeds and how far from a stoplight you should start slowing down. This will help you have better control over your car.

  6. Doppler Effect

  7. http://faraday.physics.utoronto.ca/PVB/Harrison/Flash/ClassMechanics/Doppler/DopplerEffect.htmlhttp://faraday.physics.utoronto.ca/PVB/Harrison/Flash/ClassMechanics/Doppler/DopplerEffect.html The Doppler Effect can be of assistance when you are trying to find out where a sound is coming from and how near it is. Sound radiates 360° and the closer the waves get to you the louder the sound will be. The frequency is higher when the object is moving towards you and lessens after it passes you. Sound will differ depending on where the receiver is and if it is still or moving.

  8. Projectile Motion

  9. http://www.mnstate.edu/lindaas/phys200/Lab/Sims/projectile.swfhttp://www.mnstate.edu/lindaas/phys200/Lab/Sims/projectile.swf • There are two directions to every projectile, horizontal and vertical. • The motion of a projectory is described in terms of its position, velocity, and acceleration. • X = Vx(T) X= horizontal displacement • Y = Vy(T) + ½gT² Y= vertical displacement • The projectile does not accelerate horizontally, but will accelerate vertically due to gravity (-9.8m/s²). • Knowing the trajectory of the projectile can help you understand the science behind such things as golfing, football, or simply any object being thrown or dropped.

  10. Sunsets

  11. As the sun sets its rays have a longer distance to travel to get to our eyes. Sunsets appear reddish orange because the longest wavelengths of the spectrum (ROY) are the only ones to reach us. • This effect is called Rayleigh scattering. • More magnificent sunsets are produced when sulfur aerosols are present in the atmosphere. • With physics, you know why we see the sunset as we do. Without physics, you can’t have real appreciation for this occurrence.

  12. Roller Coasters

  13. There are many different kinds of roller coasters that exist, so no matter what you like, there is one to match your taste. While most people just see roller coasters as a “thrilling” amusement park ride, it is actually a ride completely built on the concept of physics. Centripetal force is the force that pushes you down and keeps you in your seat when your going around those wild curves. And just think when you’re going up that first incline, hands sweaty, waiting for that scary drop at the end. That’s really all physics too. The potential energy that you gain going up the track is then changed to kinetic energy as you fly down the other side. So next time you’re riding a roller coaster, don’t just think of the thrill, think of the physics. http://www.physicsclassroom.com/mmedia/energy/ce.cfm

  14. Summary • In conclusion, physics affects many aspects of one’s life. • It’s better to have insight on physics to help you understand your surrounding than to be oblivious. KNOWLEDGE IS POWER!

  15. THE END!

  16. Works Cited • http://www.upscale.utoronto.ca/GeneralInterest/Harrison/Flash/ • http://www.fearofphysics.com/index1.html • http://www.mnstate.edu/lindaas/phys200/Lab/phys200lab.htm • http://library.thinkquest.org/TQ0313004/physicsofrollercoasters.html • http://images.google.com/images?gbv=2&hl=en&q=physics%20&um=1&ie=UTF-8&sa=N&tab=wi • http://images.google.com/images?gbv=2&hl=en&um=1&sa=1&q=roller+coaster&aq=f&oq= • http://hyperphysics.phy-astr.gsu.edu/HBASE/atmos/redsun.html • http://www.glenbrook.k12.il.us/GBSSCI/PHYS/CLASS/light/u12l2f.html

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