Why The Full Moon is Better in Winter

The Cubli: a cube that can jump up, balance, and 'walk'

The Cubli is a 15 × 15 × 15 cm cube that can jump up and balance on its corner. Reaction wheels mounted on three faces of the cube rotate at high angular velocities and then brake suddenly, causing the Cubli to jump up. Once the Cubli has almost reached the corner stand up position, controlled motor torques are applied to make it balance on its corner. In addition to balancing, the motor torques can also be used to achieve a controlled fall such that the Cubli can be commanded to fall in any arbitrary direction. Combining these three abilities -- jumping up, balancing, and controlled falling -- the Cubli is able to 'walk'.

Lead Researchers: Gajamohan Mohanarajah and Raffaello D'Andrea

This work was done at the Institute for Dynamic Systems and Control, ETH Zurich, Switzerland and was funded in part by the Swiss National Science Foundation (SNSF), grant number 146717.

For more details visit: http://www.idsc.ethz.ch/Research_DAnd...

Other links:
http://robohub.org/swiss-robots-cubli...

Projectile Motion

Reporter Makes Amazing Shot:




Angry Birds:




Car Bowling Fail:



Triple Blob Jump:




Kobe Pool Snake Jump:







Chevy Impala (5.09 meters) Going 24 meters/sec!





Longest Slam Dunk:

What Most Schools Don't Teach

Momentum & Energy

Rube Goldberg Mousetrap Game:

GoldieBlox: Rube Goldberg: "Princess Machine":

The Way Things Go:

Ballistic Pendulum:

Elaborate Rube Goldberg Machine:

Road Bike Party II: Martyn Ashton, Danny MacAskill and Chris Akrigg take you on a new journey with a new bike in RBP 2. Follow GCN on YouTube: Road Bike



Superpedestrian Inc., a company specializing in lightweight human-powered mobility tools, debuts the Copenhagen Wheel for bicycles. This simple wheel replacement turns bikes into hybrids that can generate power for easier pedaling.





Red Bull Kluge 2012-'13:

MIT Air Track Slinky:
Physics of Sling Shot:



IV Physics Egg Drop Videos:

Class IV Physics Egg-Catchers from Milton Academy on Vimeo.

Jed Mildon, First Triple Back Jump:



Classic Flea Jump:




Veritasium: "Newton's Third Law":



Chevy 1959 BelAir vs. 2009 Malibu:



Foucault Pendulum:





In 1851, physicist Léon Foucault demonstrated the rotation of the Earth by his experiment conducted in the Panthéon, by constructing a 67 meter Foucault pendulum beneath the central dome. The original iron sphere from the pendulum was returned to the Panthéon in 1946 from the Conservatoire National des Arts et Métiers.

en.wikipedia.org/wiki/Panth%c3%a9on,_Paris



Richard Garriot Space Video Momentum Conservation:

Ultimate Triple Blob Jump:



Double Blob Jump:




Time Warp Crash Test:


Smart Car Crash Tests:

Toyota Camry vs. Toyota Yaris:



1959 vs. 2009 Chevy Crash!:





Time Warp Bricks vs. Car:



Dog Goldberg Beneful Commercial:

OK Go:



Honda Cog:


Mythbusters Rube Goldberg:














Extraordinary Unicycle:

GoPro: Close Encounters - Proximity Flying With Jokke Sommer

G Forces & Free Falling!

52 Meter Bag Jump:

Red Bull Stratos Jump 2012:
Dwight Howard Leap Sports Science ESPN:



Peregrine Falcon:



Lenovo Rapid Boot Video:



Making Of Lenovo Rapid Boot:




Veritasium: "Misconceptions of Falling Objects::



Building Free-Fall:



Jeb Corliss Demonstrates the Wingsuit:


Jeb Corliss wing-suit demo from Jeb Corliss on Vimeo.

Flying Through The Waterfall:


flying through a waterfall from Jeb Corliss on Vimeo.


Flying Under the Arm of Christ:


Jeb Corliss flying under the arm of christ from Jeb Corliss on Vimeo.

Baserace 2010:


More Outdoor Videos

Wingsuit:






Skydive Training:





Yves Rossy Jetpack English Channel:






Angry Birds:


What To Do in a Freely-Falling Elevator:
NPR's RadioLab 

RadioLab's "Falling":


RadioLab's "Taking The Plunge":


RadioLab's "Letting Go Segment":

Tail-Drop


Red Bull Stratos Jump
Red Bull Web Site











Time Warp Professor Splash:

Space View:



"Gravity, John Mayer!":



Veritasium: "Calculating Gravitational Attraction":



"How Long Does It Take The Earth To Go Around The Sun?":



"Why Does The Moon Orbit The Earth?":



"What is Gravity?":




"Is There Gravity in Space?":



Apollo 16 Astronauts Young and Duke Moon Jumping in 1972 on the Descartes Highlands:



Time Warp Roller Coaster:



French Spiderman and BaseRace 2010:

Game Trailers - E3 2011 - AOTS Exclusive

Car Lift Commercial:




Mercedes SLS Roll



Top Gear



Toyota Aygo
40' Loop
36 mph Calculated

Felix Baumgartner 1 Year Anniversary

FULL Data POV Multi Angle Mission Data: CNN Summary:

Felix Baumgartner: First human to travel faster than the speed of light, according to MSNBC - Imgur Felix' Point of View: Felix' Jump Highlight Video: Lenovo Rapid Boot Technology Lenovo Football Wave: 60 Minutes GO Pro Airplane Crash Today Show

Visit NBCNews.com for breaking news, world news, and news about the economy

Visit NBCNews.com for breaking news, world news, and news about the economy

Visit NBCNews.com for breaking news, world news, and news about the economy

If the Moon were at the same distance as the ISS

Size Comparison of the Planets: >
Planets As If Viewed from Earth at the Moon Distance:
>
The Solar System: Our Home in Space >
What if the Earth Were Hollow? Gravity Trailer: Gravity Review:

Kinematics

Velocity problem

View more presentations from occam98.

ESPN's Sport Science Part II





Dot Physics
Explanation



Veritasium HD Slinky fall: Smarter Every Day: Bullets Under Water:



Water Balloon:




Time Warp:

Water Balloon in Face:



Sand & Goo:





Dog Shaking:
NPR All Things Considered:



Busted Water Balloon:

Mythbusters: Relative Motion:

Newton's Laws

Christmas Tree harvesting at Noble Mountain Christmas Tree Farm in Oregon. Pilot Dan Clark flying a Northwest Helicopters, LLC 206B3 Jetranger November of 2008. Oregon is the nation's biggest producer and exporter of Christmas trees, selling about 7.3 million trees a year, more than twice that of No. 2 North Carolina.

World Championship Tug O War: South Africa vs. Switzerland 2012 Worl Indoor Tug O War Championships in Perth 2012: Tug O War College Slip n Slide: Sandra Bullock in Gravity: Accelerated by One Single Human Hair: Mass vs. Weight Song:
What is a Force?:



Egg Inertia:



Immovable Object vs. Unstoppable Force:










Inertia Ball from Dale Basler on Vimeo.

Tablecloth Trick Tractor - Amazing videos are here

Flea Pulls a Miraculous Load without Friction!:
Classic Films:




"Three Incorrect laws of Motion":



"What is the Difference Between Mass and Weight?":



Xtranormal: "Weight vs. Mass":




Veritasium: "What is A Free Body Diagram/What is the Normal Force?":



Live Hockey: 1st Law: Ping Pong Balls: http://www.youtube.com/watch?v=Jh5Y8Gb-kFU Seat Belt Ad safety Montage:

America's Cup Velocity Made Good: Vectors!

America's Cup Apparent Wind: Vectors



Fresh to Frightening Crash Moments:



Superyacht Regatta:

Introduction: If you've been following the America's Cup races from San Francisco you've probably heard the announcers refer to VMG - velocity made good. This is a sailing term referring to the velocity of the boat towards a target (the component of the boat speed toward the target). Since the sailboats cannot sail directly toward their target they must try to optimize their speed, which does not necessarily mean the boat speed is as high as it could be for the conditions. The tacticians on the boats are constantly assessing wind and current conditions, course boundaries, and their opponents location to keep the boats heading toward the mark at the highest VMG - a very dynamic proposition! This is a video explainer of the concept that illustrates this practical application of vectors. https://www.youtube.com/watch?v=84hwn8gPxNc If you have not been following the races, check out some of the videos online. These boats are amazingly quick and watching 13+ tons of sailboat riding on a hydrofoil the size of a surfboard at 45+ mph is exciting.

"Romancing The Wind" - Ray Bethell

LADEE Launches!

LADEE, the Lunar Atmosphere and Dust Environment Explorer robotic probe launched Friday night atop an Orbital Sciences Corporation Minotaur V rocket. The first deep space mission from Wallops Flight Facility, LADEE will orbit the moon to collect information about its atmosphere and environmental influences on lunar dust.

Data from LADEE will help scientists better understand other planetary bodies in our solar system.




NASA: 'The nighttime launch of NASA's Lunar Atmosphere and Dust Environment Explorer (LADEE) spacecraft is currently scheduled for Friday at 11:27 p.m. EDT (0327 Sept. 7 GMT). The mission will lift off from NASA's Wallops Flight Facility on Wallops Island, Va., and you can watch its flight thanks to smartphone apps, viewing maps and several agency-sponsored special events.'"

In correspondence with NASA's Glenn Facility, I wrote this this morning:
"I enjoyed the launch from Miami watching the live feed and listening to the NASA radio broadcast on my Android as i sat in the field not too far from home.

Slight haze and no visual took me home where I gathered Lat and long and Ladee altitude data from the NASA Live feed and fed them into my spreadsheet which told me why I saw nothing (and taught me a "non-euclidean" lesson):

LADEE never "broke" through my horizon altitude, always below (and increasingly below with increasing distance). See the image at http://shawnbeightol.com/ladeeprofile.jpg or at very bottom of interactive launch spreadsheet found at www.tinyurl.com/rocketalt ."

Common Physics Misconceptions

How Far Is a Second?:



How to Weigh a Million Dollars:



The Hairy Ball Theorem:



Physics, Football, Symmetry:



Immovable Object vs. Unstoppable Force?:
Newton's Second Law, Inertia, Acceleration:



The Order of Operations:



Is It Better To Walk or Run in the Rain How To Break the Speed of Light:


There is No Fourth Dimension:



Proof Without Words, The Circle:



Round Triangles:






The Tides:



If The Moon Were Replaced By Some of Our Planets:

IV Physics Introductions 2013

USGA Golf Ball Slow Motion:40,000 FPS 150 mph


Big Bang Theory:
Walk Up A Wall?:

Jerome Simpson Flip Touchdown 2012:



2012 with Neil DeGrasse Tyson:




Twitter Earthquake Video:


From Rhett Allain: And that is it. Let me put in the following values:
•vs = 7.3 km/s.
•vt = 200 km/s. (yes, I had several values for this but this is the one I am going with)
•tt = 30 seconds.
With these values, I get a distance of about 230 km. So if you are farther than 230 km from the center of the earthquake, you might be able to get a tweet about the earthquake before you feel it.




Unbelievable Waterslide Compositing Walkthrough





Mythbusters Walking on Water/Oobleck



Liquid Mountaineering:

Physics of Awesome People:
Swimmer Stack: Eagle Picks Up Child: Classic Frames of Refernce:



"Scientific Notation Explained!":



"Scientific Notation: Example":



"How Far Away is The Moon?":









Veritasium: "Atomic Theory or Hypothesis":

2013 Tesla Model S | Frontal Crash Test by NHTSA | CrashNet1

Ford Escape 2013 Model:

Bullet Block Experiment

HALO & Prof. Splash Video Analysis

1st Video: Top Gear: HALO vs. Ford Velociraptor:

Top Gear. Top Gear(youtube.com). N.p., n.d. Web. 12 Feb. 2013. <[https://www.youtube.com/watch?v=VdIjHlzJlr8 ]https://www.youtube.com/watch?v=VdIjHlzJlr8>.

2nd Video: Mr. Splash:

Youtube.com. N.p., n.d. Web. 12 Feb. 2013. <https://www.youtube.com/watch?v=kvY9jTDTrFg>.

3rd Video: Bright Storm Free-Fall Explained!

Free Fall. Time-saving Fall. N.p., n.d. Web. 12 Feb. 2013. <http://www.brightstorm.com/science/physics/linear-and-projectile-motion/free-fall/>.

Analysis of 1^st and 2^nd videos

In the first video, there is a race between a ford Velociraptor and a HALO jumper. The ford must travel a horizontal distance of 5 miles, and the HALO jumper must travel a vertical distance of 5 miles. The HALO jumper has a terminal velocity of about 120mph. Traveling about 5 miles at 120mph means that the jumper is falling for about .04 hours, or about 2.5minutes. The ford also must complete the course in 2.5 min in order to meet the HALO jumper, as seen in the end of the video. However, the video states that the ford must reach the finish line in 4 minutes. This is the first inconsistency in the video. The video states that the ford must average at about 71 mph. When 4 minutes is converted to hours (about .07hours), the total distance comes out to about 5 miles. One factor that could cause the HALO jumper and the ford to finish neck in neck is the fact that the jumper must pull his shoot at about 2000ft. This would mean that the jumper would be falling at 120mph for 23000ft. 23000ft is equal to 4.6miles. This equates to the jumper falling at terminal velocity for 2.3 minutes. 2.3 minutes off of the 4 minutes the ford needed to complete the course would mean that the jumper was falling the 2000ft for 1.7 minutes. His velocity would equate to about 14mph. The video however stated that the jumper was traveling at an average of 60mph with his chute pulled. Therefore, we believe that this video is not a true simulation due to the inconsistences found. If the video were accurate, the HALO jumper would have reached the finish line much faster than the ford Velociraptor.

The second video deals with a smaller amount of distance to fall than the previous one. It shows a “Mr. Splash” jumping off of a 30 ft. platform taking about 3 seconds to land in a kiddie-pool about 14 inches deep. He is able to not be injured at the end of this video because when he lands he propels himself forwards into the inflated plastic pool in front of him which absorbs much of his momentum therefore allowing him to walk out of the kiddie pool unharmed from his fall. The kiddie pool absorbs 700 kg*m/s from “Mr. Splash’s freefell from 30 ft.  The fall itself is about 3 seconds long but when he jumps up, he creates a period of time where he is not moving down to the pool but accelerating upwards and has less than a second of hang time. This effects the average velocity of the entire fall because he is not accelerating downwards at all time when he is in freefell.  Unlike the first video, Mr. Splash cannot reach his terminal velocity unlike the HALO jumper in the first video. As you could possibly believe, the HALO jumper would not be able to successfully land in a 14 inch pool and able to walk away from it without a scratch as Mr. Splash did from the 30 foot drop opposed to one that is 5 miles. 

Rotational Motion Video Analysis

Veritasium: "Why Do We Get Seasons?":

Bobber Meets Roundabout from Dale Basler on Vimeo.

Roller Carousel




     In the Mckayla Maroney video, the gymnast does a perfect vault. She runs, jumps, and turns while still accelerating. This action allows her to make a perfect jump and turns in the air while landing perfectly. However, momentum is still conserved through this process. Throughout the vault, linear motion as well as rotational motion is applied. Rotational motion consists of a body moving within an axis. In other words, there is a point that the rigid object is rotating or turning on. Referring back to the Mckayla Maroney video, the gymnast receives such a high score on her vault because she has a perfect RIGID body shape that is maintain throughout her experiment, and rigid body rotation is achieved. 



     Compared to the first video, the rotational movement of the diver is much more exaggerated making it easier to be seen. In both situations, the concept of rotational motion and inertia are seen. In his case, Dana Kane, the diver uses the force in pushing off the diving board creating oscillation – a toggling back and forth between two points. The potential energy that was in the diver is transferred into kinetic energy as he begins to bounce on the diving board. In the air, the diver, in this case, tucks his body creating the smallest radius possible. By doing so, he is able to do more somersaults in the air.  When he switches over to a straight position where he is bent only at the hips, his radius is also small allowing him to transition into his somersaults easily. Because he  has a smaller radius, he is closer to his center of mass. His torque, the tendency of a particular force to rotate around a certain axis, increases as he plunges toward the water. T=Fd. As his distance increases so does torque.

     The third video showed more deeply the root of rotational motion: the center of mass. The wine glass represented the center of mass. When an object is at its center of mass, net torque is neglected, and the object is in static equilibrium. As the wine glass hits the broom\stick, the broomstick instantly breaks and rotates. As shown in the video, both pieces of broomstick spin inward towards the point at which the broomstick was broken. The two pieces of the broomstick never touch each other, spinning on their axes. The pieces of broomstick spin inward because they were broken at their center of mass. The center of mass is also the center of rotation.