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  1. In the following diagram, a force F acts on a cart in motion on a frictionless surface. The initial and final velocities of each cart are shown. Rank the energy required to change each cart's velocity from greatest to least. A: Weighs 2 kg, 5 m/s to 2 m/s - Change in KE = 1/2*2*(2*2-5*5) J = -21 J B: Weighs 3 kg, 3 m/s to -3 m/s - Change in KE = 1/2*3*(3*3-(-3)*(-3)) J = 0 J C: Weighs 5 kg, 5 m/s to 6 m/s - Change in KE = 1/2*5*(6*6-5*5) J = 27.5 J D: Weighs 4 kg, -1 m/s to 2 m/s - Change in KE = 1/2*4*(2*2-(-1)*(-1)) J = 6 J The answer says that the ranking is C, B, A
  2. The mechanical energy of a satellite in circular orbit is solved for in terms of universal gravitational potential energy. And the velocity of the satellite is compared to escape velocity. Want Lecture Notes? This is an AP Physics 1 topic. Content Times: 0:14 Types of mechanical energy of a satellite 1:21 Solving for the velocity of a satellite in circular orbit 2:34 Solving for the mechanical energy of a satellite 3:31 Comparing satellite velocity to escape velocity Next Video: Impulse for Two Objects being Attracted to One Another Multilingual? Please help translate
  3. Name: Mechanical Energy of a Satellite in Circular Orbit Category: Circular Motion & Gravity Date Added: 2018-03-04 Submitter: Flipping Physics The mechanical energy of a satellite in circular orbit is solved for in terms of universal gravitational potential energy. And the velocity of the satellite is compared to escape velocity. Want Lecture Notes? This is an AP Physics 1 topic. Content Times: 0:14 Types of mechanical energy of a satellite 1:21 Solving for the velocity of a satellite in circular orbit 2:34 Solving for the mechanical energy of a satellite 3:31 Comparing
  4. By the time students learn about all the equations for mechanical energy, momentum, impulse and impact force, they often start to confuse the equations with one another. This is a straightforward, simple look at all of those equations and when to use them. This is an AP Physics 1 Topic. Want Lecture Notes? Content Times: 0:14 Tacky Sweater Day! 0:22 Conservation of Mechanical Energy 0:54 Work due to Friction equals Change in Mechanical Energy 1:30 Net Work equals change in Kinetic Energy 3:01 Conservation of Momentum does NOT require the work due to friction to be zero 3:28
  5. Name: Review of Mechanical Energy and Momentum Equations and When To Use Them! Category: Momentum and Collisions Date Added: 2017-02-16 Submitter: Flipping Physics By the time students learn about all the equations for mechanical energy, momentum, impulse and impact force, they often start to confuse the equations with one another. This is a straightforward, simple look at all of those equations and when to use them. This is an AP Physics 1 Topic. Want Lecture Notes? Content Times: 0:14 Tacky Sweater Day! 0:22 Conservation of Mechanical Energy 0:54 Work due to Friction equals C
  6. PaperBoy

    Big, Empty Space

    Something that baffles scientists today is a strange situation called the Fermi Paradox, named after Italian physicist Enrico Fermi. The basic conundrum is that there's an incredibly high probability that alien life forms not only exist in the universe, but nearby Earth. The reason for this statement is the radically large number of solar systems in our galaxy alone. With so many stars in the observable universe, billions are similar to our Sun. The likelihood that many of these stars have Earth-like planets is therefore quite high. Assuming Earth is a typical planet, intelligent life mus
  7. Enjoy learning from Billy as he solves a problem using Work due to Friction equals Change in Mechanical Energy. Want Lecture Notes? This is an AP Physics 1 topic. Content Times: 0:21 The problem 0:51 Work due to Friction equals Change in Mechanical Energy 1:31 Determining the Mechanical Energies 2:44 Solving for the Force Normal 3:52 Relating height final to displacement along the incline 5:03 Substituting in numbers Next Video: Deriving the Work-Energy Theorem using Calculus See this problem solved using Conservation of Energy and Newton’s Second Law. Multiling
  8. The equation Work due to Friction equals Change in Mechanical Energy can often be confusing for students. This video is a step-by-step introduction in how to use the formula to solve a problem. Want Lecture Notes? This is an AP Physics 1 topic. Content Times: 0:09 The problem 1:29 Why we can use this equation in this problem 1:52 Expanding the equation 2:29 Identifying Initial and Final Points and the Horizontal Zero Line 3:00 Substituting into the left hand side of the equation 4:05 Deciding which Mechanical Energies are present 4:59 Where did all that Kinetic Energy go?
  9. Name: Work due to Friction equals Change in Mechanical Energy Problem by Billy Category: Work, Energy, Power Date Added: 2016-02-17 Submitter: Flipping Physics Enjoy learning from Billy as he solves a problem using Work due to Friction equals Change in Mechanical Energy. Want Lecture Notes? This is an AP Physics 1 topic. Content Times: 0:21 The problem 0:51 Work due to Friction equals Change in Mechanical Energy 1:31 Determining the Mechanical Energies 2:44 Solving for the Force Normal 3:52 Relating height final to displacement along the incline 5:03 Substituting in numbers
  10. Learn how to use Mechanical Energy when the Work done by Friction does not equal zero. Want Lecture Notes? This is an AP Physics 1 topic. Content Times: 0:09 When is Conservation of Mechanical energy true? 0:37 Work due to Friction equals the Change in Mechanical Energy 1:57 Determining the angle in the work equation 3:01 When the angle is not 180 degrees 3:50 What if the work done by friction is zero? 4:31 Always identify … Next Video: Introductory Work due to Friction equals Change in Mechanical Energy Problem Multilingual? Please help translate Flipping Physi
  11. Name: Introductory Work due to Friction equals Change in Mechanical Energy Problem Category: Work, Energy, Power Date Added: 2016-02-12 Submitter: Flipping Physics The equation Work due to Friction equals Change in Mechanical Energy can often be confusing for students. This video is a step-by-step introduction in how to use the formula to solve a problem. Want Lecture Notes? This is an AP Physics 1 topic. Content Times: 0:09 The problem 1:29 Why we can use this equation in this problem 1:52 Expanding the equation 2:29 Identifying Initial and Final Points and the Horizontal Zero
  12. Sing and learn about Work and Mechanical Energy with Bo! Want Lyrics? This is an AP Physics 1 topic. Multilingual? Please help translate Flipping Physics videos! Next Video: Introduction to Mechanical Energy with Friction Previous Video: Conservation of Energy Problem with Friction, an Incline and a Spring by Billy Hear "The Energy Song" on Soundcloud. 1¢/minute
  13. Name: Introduction to Mechanical Energy with Friction Category: Work, Energy, Power Date Added: 2016-02-08 Submitter: Flipping Physics Learn how to use Mechanical Energy when the Work done by Friction does not equal zero. Want Lecture Notes? This is an AP Physics 1 topic. Content Times: 0:09 When is Conservation of Mechanical energy true? 0:37 Work due to Friction equals the Change in Mechanical Energy 1:57 Determining the angle in the work equation 3:01 When the angle is not 180 degrees 3:50 What if the work done by friction is zero? 4:31 Always identify … Next V
  14. PaperBoy

    Over 9000

    We all know Einstein's famous equations E=mc^2. It means that energy and mass are two halves of the same variable, and that a little mass makes an enormous amount of energy. We also know its disastrous effects, as evidenced in the US's infamous Manhattan Project. The first nuclear bomb ever tested was dubbed "The Gadget, " and the test itself was nicknamed the Trinity Test. It was conducted on the morning of July 16, 1945 in the Alamogordo bombing range of New Mexico. The bomb was said to release the energy of about 20 kilotons of TNT, or about 84 terrajoules. Now, if we plug that number
  15. Name: The Energy Song by Bo Category: Work, Energy, Power Date Added: 2016-01-29 Submitter: Flipping Physics Sing and learn about Work and Mechanical Energy with Bo! Want Lyrics? This is an AP Physics 1 topic. Multilingual? Please help translate Flipping Physics videos! Next Video: Introduction to Mechanical Energy with Friction Previous Video: Conservation of Energy Problem with Friction, an Incline and a Spring by Billy Hear "The Energy Song" on Soundcloud. 1¢/minute The Energy Song by Bo
  16. Billy helps you review Conservation of Mechanical Energy, springs, inclines, and uniformly accelerated motion all in one example problem. Want Lecture Notes? This is an AP Physics 1 topic. Content Times: 0:10 The problem 0:38 Listing the known values 1:40 Using Conservation of Mechanical Energy 2:56 Canceling out the Mechanical Energies which are not there 4:18 Drawing the Free Body Diagram 4:52 Summing the forces in the perpendicular direction 5:26 Summing the forces in the parallel direction 6:59 Using Uniformly Accelerated Motion 7:56 Finding the maximum height
  17. Name: Conservation of Energy Problem with Friction, an Incline and a Spring by Billy Category: Work, Energy, Power Date Added: 2016-01-14 Submitter: Flipping Physics Billy helps you review Conservation of Mechanical Energy, springs, inclines, and uniformly accelerated motion all in one example problem. Want Lecture Notes? This is an AP Physics 1 topic. Content Times: 0:10 The problem 0:38 Listing the known values 1:40 Using Conservation of Mechanical Energy 2:56 Canceling out the Mechanical Energies which are not there 4:18 Drawing the Free Body Diagram 4:52 Summing th
  18. Ian Terry, winner of Big Brother 14, makes a special appearance to help us learn about Conservation of Mechanical Energy. See several demonstrations and understand when mechanical energy is conserved. Want Lecture Notes? This is an AP Physics 1 topic. Content Times: 0:01 Reviewing the three different types of mechanical energy 0:23 Mr. Terry drops an object for our first demonstration 0:58 Calculating Kinetic Energy and Gravitational Potential Energy 2:53 Mechanical energy data table 3:37 Conservation of mechanical energy graph 5:10 When is mechanical
  19. Name: Introduction to Conservation of Mechanical Energy with Demonstrations Category: Work, Energy, Power Date Added: 2015-12-18 Submitter: Flipping Physics Ian Terry, winner of Big Brother 14, makes a special appearance to help us learn about Conservation of Mechanical Energy. See several demonstrations and understand when mechanical energy is conserved. Want Lecture Notes? This is an AP Physics 1 topic. Content Times: 0:01 Reviewing the three different types of mechanical energy 0:23 Mr. Terry drops an object for our first demonstration 0:58 Calculating Kinetic
  20. PaperBoy

    Electrifying!

    Remember those cartoon kids shows where lightning bolts sent you flying into the sky with your pants on fire? I’m talking about a Team Rocket blasting off again sort of scenario. I always thought those were pretty funny, but how would they work in real life? Let’s assume that by the Laws of Disney magic, being struck with lightning instantly converts all of its energy into kinetic energy for the object hit. So, a 50 kg cartoon character gets pegged. The average lightning bolt has about 5 GJ of electrical energy in it, and contact lasts only about 30 µs. The character starts at rest
  21. PaperBoy

    Grapple Zapple

    Everybody loves a good hero. But, are they realistic? Some of our favorite crusaders - Batman, Link, Green Arrow - use grappling hooks to get around. I wonder if they’d work like in the games and movies. Let’s say Batman is trying to get into Arkham Asylum to teach some no good-nicks what he thinks of this whole “rehabilitation” thing. He needs to get two floors up, which is about 6.6 m. And, like in the movies, he needs to rocket up that distance, let’s say at about 6 m/s. The average man weighs 70 kg, but Batman is pretty buff, so we’ll make it 75 kg. We can calculate the work ne
  22. Review of the topics of Work, Energy, Power and Hooke’s Law covered in the AP Physics 1 curriculum. Content Times: 0:18 Work 1:38 Kinetic Energy 2:13 Elastic Potential Energy 3:02 Gravitational Potential Energy 4:02 Work and Energy are in Joules 4:58 Conservation of Mechanical Energy 5:54 Work due to Friction equals the Change in Mechanical Energy 6:46 Power 7:46 Hooke’s Law Multilingual? [url="http://www.flippingphysics.com/translate.html"]Please help translate Flipping Physics videos[/url]! Want [url="http://www.flippingphysics.com/ap1-work-review.html"]Lecture Notes[/url
  23. Name: Work, Energy and Power Review for AP Physics 1 Category: Exam Prep Date Added: 13 March 2015 - 08:25 AM Submitter: Flipping Physics Short Description: None Provided Review of the topics of Work, Energy, Power and Hooke’s Law covered in the AP Physics 1 curriculum. Content Times: 0:18 Work 1:38 Kinetic Energy 2:13 Elastic Potential Energy 3:02 Gravitational Potential Energy 4:02 Work and Energy are in Joules 4:58 Conservation of Mechanical Energy 5:54 Work due to Friction equals the Change in Mechanical Energy 6:46 Power 7:46 Hooke’s Law Multilingual? View Video
  24. I used to own a half-pipe. Well, a mini-pipe rather. It was a about 1.5 meters tall. Skate baording on it is interesting because at the top of the pipe all you're energy is due to gravity. That means Etop=mgh As one rides down the half-pipe, potential energy is converted to kinetic. At the bottom Ebot=(1/2)mv^2 HOWEVER... In many sports that include a standing on board, a common method to gain speed is to PUMP. Pumping, in its simplest form, is pushing down on the board when you're going up or down a ramp. Or any curve for that matter. Its possible to PUMP on any curve who's concavi
  25. FaithDemo06

    Energy

    The higher you are from the ground the more potentional energy you have, the faster you're falling the more kinetic energy you have, but add it up and youll always have the same amount of internal energy. This is pretty much a basic concept of gymnastics. When practicing, the higher the beam is the more potential energy you have, but this also means the harder the fall or the better the dismount when transfered to kinetic energy. Or you could have the beam lower and have less potential energy, the less the fall will hurt but the more difficult the dismount. Youll hope that if the beam is low y
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