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Circular Motion and Gravitation in Physics 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. If a planet's average distance from the sun is 10 AU, what is its orbital period?

Question 2 2. Kepler's Second Law states:

Question 3 3. A metal bar is positioned near the Sun. If the mass of the metal bar is 20,000 kilograms, the mass of the Sun is 2 x 10^30 kilograms, the distance to the nearside of the bar from the Sun is 100,000 meters, and the length of the bar is 300 meters, what is the force of gravity between the Sun and the bar?

Question 4 4. What is Newton's Law of Universal Gravitation in words?

Question 5 5. At 4 seconds after starting, a cyclist is traveling 10 m/sec. At 6 seconds, he is traveling 20 m/sec. What is his average acceleration from 4 seconds to 6 seconds?

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Question 6 6. Which of the following units would be correct for an acceleration?

Question 7 7. What is the difference between a scalar and a vector?

Question 8 8. A ball on a string in uniform circular motion has a velocity of 8 meters per second, a mass of 2 kilograms, and the radius of the circle is 0.5 meters. What is the centripetal force keeping the ball in the circle?

Question 9 9. If you were given a force-displacement graph, how would you figure out the work done in the process?

Question 10 10. The force applied to an object is given by the equation F = 6x + 1. If the total displacement is 5 meters, how much work is done in the process?

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Question 11 11. What do the brackets indicate in an equilibrium equation?

Question 12 12. Calculate the value of the equilibrium constant, K, for the system below, if 0.0954 moles of CO2, 0.0454 moles of H2, 0.0046 moles of CO, and 0.0046 moles of H2O vapor were present in a 1.00 L reaction vessel at equilibrium.

Question 13 13. What is an elliptical orbit?

Question 14 14. 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 15 15. What is the definition of centripetal force?

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Question 16 16. Why do you feel a centrifugal force if it isn't real?

Question 17 17. Consider a man walking around a house in a rectangle pattern. He walks 70 feet across the front, 30 feet along the side, 70 feet along the back, and 30 feet along the other side to bring him back to where he began. How much distance did this man cover?

Question 18 18. Which of the following is a vector quantity?

Question 19 19. If a car is rolling naturally downhill without the engine running, what energy transfer is happening?

Question 20 20. Which of the following objects has the most gravitational potential energy?

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Question 21 21. What is the eccentricity of a circular orbit?

Question 22 22. If the distance between the two foci in an orbit is 4 AU, and the length of the major axis is 9 AU, what is the eccentricity of the orbit?

Question 23 23. Is motion in a vertical circle 'uniform circular motion'? Why?

Question 24 24. A ball on a string is whirled in a vertical circle. If the tension in the string at the top of the circle is 10 newtons, and the ball weighs 2 kilograms, what is the tension in the string at the bottom of the circle?

Question 25 25. What is Newton's Law of Gravitation?

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Question 26 26. If you increase the distance between two objects by a factor of three, what happens to the force between them?

Question 27 27. If a planet's orbital period is 10 years, what is its average distance from the sun?

Question 28 28. What is an extended object?

Question 29 29. Average acceleration is calculated by:

Question 30 30. What is the name of the force that keeps an object in circular motion?

Circular Motion and Gravitation in Physics 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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