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jack up (something)
to raise prices, to raise something with a lifting device
The gas station jacked up their gas prices during the storm.
We jacked up the car so that we could change the tire.
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  • Rules to play Luge

    Artificial tracks

    Artificial luge tracks have specially designed and constructed banked curves plus walled in straights. Most tracks are artificially refrigerated, but artificial tracks without artificial cooling also exist for example, in St. Moritz. Tracks tend to be very smooth.

    The athletes ride in a flat, aerodynamic position on the sled, keeping their heads low to minimize air resistance. They steer the sled mainly with their calves by applying pressure on the runnersright calf to turn left, left calf to turn right. It takes a precise mix of shifting body weight, applying pressure with calves and rolling the shoulders. There are also handles for minor adjustments. A successful luger maintains complete concentration and relaxation on the sled while traveling at high speeds. Most lugers visualize the course in their minds before sliding.citation needed Fastest times result from following the perfect line down the track. Any slight error, such as a brush of the wall, costs time. Track conditions are also important. Softer ice tends to slow speeds, while harder ice tends to lead to faster times. Lugers race at speeds averaging 120 145 km h 75 90 mph around high banked curves while experiencing a centripetal acceleration of up to 5g. Mens Singles have their start locations near where the bobsled and skeleton competitors start at most tracks, while both the Doubles and Womens Singles competition have their starthouse located further down the track. Artificial track luge is the fastest and most agile sledding sport.


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