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Alice Lansangan

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Concorde

In 1970, the prototype British-built airplane Concorde 002 made its first supersonic flight (700 mph; 1,127 kph). A few months earlier, the French prototype, Concorde 001, had broken the sound barrier on 1 Oct 1969. Mach 2 was achieved by Concorde 001 on 4 Nov 1970, and by Concorde 002, a few days later on 12 Nov 1970. The combined number of supersonic flights by the two aircraft reached 100 by Jan 1971.

Begin by standing on a comfort...

Begin by standing on a comfortable surface, where you have plenty of room at each side. With a 5-lb potato sack in each hand, extend your arms straight out from your sides and hold them there as long as you can. Try to reach a full minute, and then relax. Each day you'll find that you can hold this position for just a bit longer.
After a couple of weeks, move up to 10-lb potato sacks. Then try 50-lbpotato sacks and then eventually try to get to where you can lift a 100-lbpotato sack in each hand and hold your arms straight for more than a full minute. (I'm at this level.)
After you feel confident at that level, put a potato in each of the sacks.
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