Speed Kills The high speed limits are often causes of accidents that cause serious injuries and even death. The speed limit should be lowered so we can control accidents caused by high speed driving‚ pollution‚ and the high cost of operation and insurance. First of all it is obvious that a motorist driving over the speed limit has more chances of getting into an accident that a motorist who is traveling at the average speed. One who drives fast does not have proper and that well of a control
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reasons is that the legal speeds are considerably safer than higher speeds. Traffic control establishes a set of rules and regulations that people rely on to help avoid collisions and other hazards. With almost 160 million motorists and 3.8 million miles of public roads in the United States‚ traffic control on the highways is an important aspect of daily life. Without the control of speed there would be more fatalities than we already have now. Speed limits should be obeyed. A motorist going too slow
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border. 6. Caf´ e Milagro sells coffee online. A half-kilogram bag of coffee costs 8.95 $‚ excluding shipping. If you order six bags‚ the shipping costs 6.90 $. Whats the cost per bag when you include shipping? The total purchase is 6 bags plus shipping‚ 6(8.95 $) + 6.90 $ = 60.60 $ Dividing by the number of bags gives 10.10 $ per bag. 7. Express the following with appropriate units and significant figures: (a) 1.0 m plus 1 mm‚ (b) 1.0 m times 1 mm‚ (c) 1.0 m minus 999 mm‚ (d) 1.0 m divided by 999
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and the travel time‚ how do you calculate the distance travelled? 9. The speedometer in a car also has an instrument that records distance travelled. What is this called? If this instrument reads zero at the beginning of a trip and 35 km a half hour later‚ what is the average speed? Section 4.3 – Velocity 1. Although we use these two words interchangeably‚ what is the difference between speed and velocity? 2. What is described when a car travels 60 km/h? How could we describe its velocity? 3
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SOLUTION TO HOMEWORK PROBLEMS Chapter-4: MOTION IN TWO DIMENSIONS 1 A particle starts from the origin at t = 0 with a velocity of 6.0[pic] m/s and moves in the xy plane with a constant acceleration of (-2.0[pic] + 4.0[pic]) m/s2. At the instant the particle achieves its maximum positive x coordinate‚ how far is it from the origin? [pic] 2 At t = 0‚ a particle leaves the origin with a velocity of 5.0 m/s in the positive y direction. Its acceleration is given by [pic] = (3.0[pic] - 2.0[pic])
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posted at 35 mph or less. Speed is involved in about one out of three fatal crashes. It is the third leading contributing factor to traffic crashes. Speeding at any level is dangerous. Around half of all speed-related fatalities happen at just 10 miles or less above the speed limit*. In addition to these tragic deaths‚ hundreds more people every year are injured in speed
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different speed limit every each blocks‚ so if someone who visit here first‚ they do mistake unexceptionally. In addition‚ drivers are confused by different measure of speedometer of vehicles they drive. For instance‚ the speedometer of the U.S cars show “miles” not “kilometers”‚ so drivers should be careful when they drive an U.S car in Canada. Because they easy to over speed if they don’t understand the difference of measurement. And rarely happen‚ drivers lose control because of malfunction of vehicles
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any control * Driving two motor vehicles side by side occupying multiple lanes that is longer than reasonably necessary * Driving with the driver absent from the driver’s seat or with a passenger in the trunk * Driving 50 kilometers per hour over the
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Aircraft type: The Bombardier Dash 8 or Q-Series DHC-8. Seating: 50 (single class) seat versions. Engine: twin-engine‚ medium range‚ turbo prop. Features: the dash 8 features a high mounted wing and T-tail‚ an advanced flight control system and large full length trailing edge flaps. Wing span: 90 ft (27.43 m) Cruising speed: 328 mph (528 km/h) 285 knots Max. takeoff weight: 43‚000 lb (19‚500 kg) Fuel capacity: 848 US gal (3‚210 L) Aircraft type: Boeing 737-800 aircraft. Seating: 110
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Sound A. What is the definition of Sound? Sound is everything that a person‚ animal or computer can hear. It can be created in a countless number of ways and occurs from anything as simple as tapping on a table. All sounds are a series of vibrations that travel through a medium in all possible directions. The cause of sound is the vibration of an object; once the item vibrates the sound waves then radiate outwards until they are either stopped or they die out. A sound wave has three characteristics:
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