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MTEL Physics: Laws of Gravitation Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. Which of the following orbital eccentricities is NOT an elliptical orbit?

Question 2 2. Which is the equation for the law of universal gravitation?

Question 3 3. If the distance between two objects is 500 km and is increased to 1000 km, what happens to the gravitational force between them?

Question 4 4. A planet is orbiting its star at a maximum radius of 1.2 x 10^7 meters. If the mass of the star is 2 x 10^30, what is the time period of the orbit?

Question 5 5. Consider two planets. Planet X has a mass of 100 Units while Planet Y has a mass of 1,000 Units. Which of the following is NOT true concerning these planets?

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Question 6 6. In general, what are Kepler's Laws?

Question 7 7. A curve surrounding two points, called foci, such that the total distance from one focus to a point on the ellipse and back to the other focus is constant for every point on the curve is called:

Question 8 8. The law of universal gravitation states that

Question 9 9. Which of the following is accurate about the force of gravity?

Question 10 10. Why do you feel 'weightless' on the moon?

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Question 11 11. If a planet's average distance from the sun is 10 AU, what is its orbital period?

Question 12 12. A planet is orbiting its star at a maximum radius of 1.2 x 10^7 meters. If the mass of the star is 2 x 10^30, and the current radius is 0.9 x 10^7 meters, what is the velocity of the orbit?

Question 13 13. The gravitational force between two objects depends on

Question 14 14. What is an elliptical orbit?

Question 15 15. Consider a 10 kg object free-falling from a cliff with an initial velocity of 0 m/sec. How fast will the object be traveling after 1 sec and after 2 sec?

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Question 16 16. Which of the following is accurate of acceleration due to gravity on Earth?

Question 17 17. Consider an alien on a planet with an acceleration of gravity equal to 20 m/sec^2. If the alien's mass is 10 kg, how much does the alien weigh?

Question 18 18. If a planet's orbital period is 10 years, what is its average distance from the sun?

Question 19 19. Kepler's Second Law states:

Question 20 20. The time it takes a planet to travel around the sun one time is known as the:

MTEL Physics: Laws of Gravitation Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next question. You can skip questions if you would like and come back to them later with the "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. You will lose your work if you close or refresh this page. Good luck!

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