1.) A motorist travels 150 kilometers in 2.5 hours. Determine the motorist?s ave
ID: 2281784 • Letter: 1
Question
1.) A motorist travels 150 kilometers in 2.5 hours. Determine the motorist?s average speed. a.) 50 kilometer/hour b.) 60 kilometer/hour c.) 70 kilometer/hour d.) 80 kilometer/hour Answer 2.) A wave travels a distance of 6700 kilometer in a time of 125 seconds. Determine the speed of the wave. a.) 4.21 kilometer/second b.) 68.5 kilometer/second c.) 21.8 kilometer/second d.) 53.6 kilometer/second Answer 3.) The speed of light is 3.00 x 108meter/second. The distance from the Earth to a planet is 1.17 x 1012meter. Calculate how much time must elapse between the sending of a radar pulse to the planet and the reception of the reflected pulse back on earth. a.) 5400 seconds b.) 1800 seconds c.) 610 seconds d.) 7800 seconds Answer 4.) The speed of sound in sea water has an average value of 1530 meter/second. Determine the distance to an underwater mountain if the sound requires a round trip time is 4.0 seconds to travel from the sound source to the mountain and back to a detector at the same location as the source. a.) 7510 meter b.) 3780 meter c.) 1460 meter d.) 3060 meter Answer 5.) Convert 75 mile/hour to meter/second. a.) 41.6 meter/second b.) 33.5 meter/second c.) 24.6 meter/second d.) 17.8 meter/secondExplanation / Answer
1. a
2. c
3. d
4. a
5. b
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