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1) Assume that the Earth follows a perfectly circular orbit arou à radius of 1 au. It takes one year for the Earth to complete ar he average speed of the Earth in its orbit? Give your answer in kilometers ›) The typical speed limit for a car on an Illinois highway is 75 How fast is this in kilometers per second? :) Compare the speed of Earth to the speed of the car you fou determine the difference between them (subtract) then deterr

1) Assume that the Earth follows a perfectly circular orbit arou à radius of 1 au. It takes one year for the Earth to complete ar he average speed of the Earth in its orbit? Give your answer in kilometers ›) The typical speed limit for a car on an Illinois highway is 75 How fast is this in kilometers per second? :) Compare the speed of Earth to the speed of the car you fou determine the difference between them (subtract) then deterr

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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a) Assume that the Earth follows a perfectly circular orbit around the Sun, with a radius of 1 au. It takes one year for the Earth to complete an orbit. What is the average speed of the Earth in its orbit? Give your answer in kilometers per second. b) The typical speed limit for a car on an Illinois highway is 75 miles per hour. How fast is this in kilometers per second? c) Compare the speed of Earth to the speed of the car you found above. First determine the difference between them (subtract), then determine their ratio (divide). Which of these two methods do you think provides a better way of comparing the numbers, and why? That is, which method best emphasizes the magnitude of the difference between these speeds? Possibly Useful Equations/Relations: Distance = Speed x Time = v*t Circle Circumference = ¹x Diameter = *D Diameter = 2 x Radius = 2*R Units and Abbreviations m: meter (distance) cm: centimeter (distance) km: kilometer (distance) AU: Astronomical Unit (distance) s: second (time) yr: year (time) Relevant Numbers Speed of Light = 3x108 m/s 1 lightyear = the distance light travels in one year = 9.5x1012 km 1 au = 150,000,000 km = 1.5x108 km 1 inch = 2.54 cm 1 m = 100 cm 1 m = 0.001 km 1 mile = 1.6 km 1 mile = 5280 feet 1 foot = 12 inches
Transcribed Image Text:a) Assume that the Earth follows a perfectly circular orbit around the Sun, with a radius of 1 au. It takes one year for the Earth to complete an orbit. What is the average speed of the Earth in its orbit? Give your answer in kilometers per second. b) The typical speed limit for a car on an Illinois highway is 75 miles per hour. How fast is this in kilometers per second? c) Compare the speed of Earth to the speed of the car you found above. First determine the difference between them (subtract), then determine their ratio (divide). Which of these two methods do you think provides a better way of comparing the numbers, and why? That is, which method best emphasizes the magnitude of the difference between these speeds? Possibly Useful Equations/Relations: Distance = Speed x Time = v*t Circle Circumference = ¹x Diameter = *D Diameter = 2 x Radius = 2*R Units and Abbreviations m: meter (distance) cm: centimeter (distance) km: kilometer (distance) AU: Astronomical Unit (distance) s: second (time) yr: year (time) Relevant Numbers Speed of Light = 3x108 m/s 1 lightyear = the distance light travels in one year = 9.5x1012 km 1 au = 150,000,000 km = 1.5x108 km 1 inch = 2.54 cm 1 m = 100 cm 1 m = 0.001 km 1 mile = 1.6 km 1 mile = 5280 feet 1 foot = 12 inches
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