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GPE and Kinetic Energy
- 1. Gravitational Potential and Kinetic Energy GCSE Physics
- 12. Fastest man on the planet over 100 metres 10.32 m/s or 23.1 mph
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- Top of the wave travels faster than the bottom part and the wall of water is the perfect structure to be surfed.
- All avalanches are caused by an over-burden of material, typically snowpack , that is too massive and unstable for the slope that supports it. Terrain, Snow structure and characteristics, Weather.
- BASE jumping Building, Antenna, Span, Earth
- Kingda Ka, Six Flags, NJ, On May 21, 2005 Six Flags Great Adventure introduced Kingda Ka, the tallest, fastest roller coaster on the planet to the public. This $25-million Swiss designed "rocket coaster" uses hydraulic motors to launch the trains along a horizontal section of track from zero to 128 mph in an impressive 3.5 seconds. The trains then begins a vertical ascent up a steel tower that peaks at 456 feet or 45 stories. Crossing over the apex the train enters a vertical descent plunging through a 270-degree spiral twist again reaching speeds in excess of 100 mph. One final surprise comes before the brake run, a 129-foot tall camelback hill, that offers plenty of negative G's also known fondly as "airtime".
- The Earth, at the equator… 25,000 miles pass by in 24 hours, at a speed of 25000/24 or just over 1000 miles per hour. The circumference of the Earth's orbit is about 940 million kilometres, so over one year (8760 hours), 107 000 km/hr or 66 500 mph (M = 5.98 × 10 24 kg )
- Usain Bolt, world record - 9.69 s over 100 m which is 10.32 m/s or 23.1 mph
- Mass of the Earth Sir Isaac Newton greatly contributed to the study of physics and therefore, his efforts determined the mass of the Earth. His law of gravity and second law of motion are used together to obtain a value for the mass of our planet. Newton's law of gravity formulates the gravitational force that two masses exert on each other and is given by F = GmM/r 2 M an m are the two masses, r is the separation between them, and G is the universal gravitational constant which was calculated by Henry Cavendish in 1798, which has a value of 6.67 × 10 -11 m 3 /(kg sec 2 ). If we assumed that M is the mass of the Earth, and m is the mass of an object on the surface of the Earth, we can solve for M by equating Newton's Law of Gravity with his second law of motion F = ma We have: F = GmM/r 2 = ma -> GM/r 2 = a Solving for M, the mass of the Earth, and using a = 9.8 m/s 2 , r = 6.38 × 10 6 m, and G = 6.67 × 10 -11 m 3 /(kg sec 2 ) we obtain: M = ar 2 /G = 5.98 × 10 24 kg http://en.wikipedia.org/wiki/Gravitational_constant