If I was moving too fast, I pushed the control bar away from me to slow down. If I was moving too slow, I pulled the control bar toward me to speed up. I had to fly in a straight line. If I veered to the right, I had to shift my weight to the left to get back on ...
Hypersonic speed is five times the speed of sound. Scientists measure speeds this fast with a Mach number, named for Austrian physicist Ernst Mach. Sound has a speed of Mach 1 and anything Mach 5 or above is considered hypersonic. While the speed of sound changes depending on temperature and...
Without this drogue, the combined weight of the instructor and student would cause the pair to fall at 180 to 200 mph (290 to 320 kph) -- much faster than the normal 120 mph. The drogue slows the pair down to the normal falling speed. When it is time to deploy the parachute, the ...
(1)How fast was the wave traveling?A. 250 kph.B. 800 kph.C. 1500 kph.(2)What did the Chinese Embassy do to help?A. It set up temporary hospitals.B. It bought extra supplies from Indonesia.C. It asked a German company to rescue people.(3)What kind of supplies are needed right ...
The future of train transportation will be dictated by the price and availability of oil, the determination of governments to find alternate modes of travel and the public demand for economical, fast transportation. For example, Europe's high passenger rail traffic was driven in part by historical...
The string on the windshield tells the pilot if the plane is yawing The wings on a glider have to produce enough lift to balance the weight of the glider. The faster the glider goes the more lift the wings make. If the glider flies fast enough the wings will produce enough lift to ...
It can go very, very fast. It has a jet engine that allows it to jump/fly through the air much farther than any normal car could. It has two driving positions -- one for driving and one for jumping/flying. It has stealth capabilities, and part of the stealth mode is a silent, ele...
The arm and its movement mechanism are extremely light and fast. The arm on a typical hard-disk drive can move from hub to edge and back up to 50 times per second — it is an amazing thing to watch! Inside: Disk Platters and Heads A close up of an exposed hard disk drive. In...
Some pitcher's can throw a baseball as fast as 100 miles per hour (161 kph), so a player needs to wear a helmet to prevent severe head injuries. Batting glove - Although not a required piece of equipment, many batters wear gloves to protect their hands while batting. Blisters may be ...
The arm and its movement mechanism are extremely light and fast. The arm on a typical hard-disk drive can move from hub to edge and back up to 50 times per second — it is an amazing thing to watch! Inside: Disk Platters and Heads A close up of an exposed hard disk drive. In...