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Orbits Pre-Assessment Questions

Orbits Pre-Assessment Questions. 1. What is the radius of the earth?. Know Don’t Know I can find it Rest R = 3678km. Can you calculate the average circumference of the earth (+/- 100 km)?. Know Don’t Know Confused? all C = 2*pi*R pi = 3.14159. Orbits Pre-Assessment Questions.

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Orbits Pre-Assessment Questions

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  1. Orbits Pre-Assessment Questions 1. What is the radius of the earth? • KnowDon’t KnowI can find it • Rest • R = 3678km Can you calculate the average circumference of the earth (+/- 100 km)? • KnowDon’t KnowConfused? • all • C = 2*pi*R pi = 3.14159

  2. Orbits Pre-Assessment Questions Which way does a location on the earth’s equator travel due to the rotation of the earth? • KnowDon’t KnowNon committal • 4 8 rest • East Agree? = all Can you calculate how many km that a point on the equator travel in one hour? • KnowDon’t KnowConfused? • 9 rest • Know? • Circumference = 40,054 km • Full rotation in hours = 24 hours • Travel = 40,054/24 --velocity = 1666km/hr

  3. Orbits Pre-Assessment Questions • Circumference = 40,054 km • Full rotation in hours = 24 hours • Travel velocity = 40,054/24 --velocity = 1668km/hr • Find distance in one hour? D= V*time = 1668 km/hr * 1 hr • = 1,668 km

  4. Orbits Pre-Assessment Questions Can you calculate how many miles will a point on the equator travel in one hour? • KnowDon’t KnowConfused? • 15

  5. Orbits Pre-Assessment Questions Can you calculate how many miles will a point on the equator travel in one hour? • KnowDon’t KnowConfused? • All - yahooooo Conversions - need to convert km to miles 1 kilometer = 0.621371192 miles distance is 1,668 km - ????? Miles fact - there are 1.6 km/mile distance = 1,668 km * 0.6213 miles/ km = 1036 miles

  6. Orbits Pre-Assessment Questions Can you calculate the velocity in km/sec that a point on the equator travels? • KnowDon’t KnowBlows me away • 16 Velocity = 1,668 km/hour Convert hours ---- to seconds? How many seconds /hour? = 3600 sec/hour Velocity = 1,668 km/hour *3600 sec/hour = xxxxx (km sec)/(hour *hour) = 1,668 km/hour /(3600 sec/hour) = xxxx ( km hour)/(sec hour) = 0.463 km/sec SUPER

  7. Orbits Pre-Assessment Questions What average velocity do you need your lunar module to have to travel 150 km to get to the to meet the lunar orbiter in two hours? Answer: velocity = 75 km/hour

  8. Orbits Pre-Assessment Questions Can you calculate the velocity in miles/hour that a point on the equator? • KnowDon’t KnowConfused? What is meant by an ascending node pass of a spacecraft orbiting the earth? • KnowDon’t KnowBlows me away

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