# Circular Motion and Gravitation in Physics Chapter Exam

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#### Question 1 1. What is the name of the force that keeps an object in circular motion?

#### Question 2 2. 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 3 3. 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. What is the displacement of the man walking around the house?

#### Question 4 4. The force applied to an object is given by the equation F = 3x^2 + 2x. If the total displacement is 2 meters, how much work is done in the process?

#### Question 5 5. What is Newton's Law of Gravitation?

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#### Question 6 6. A 10 kg bowling ball is lifted from the ground to a height of 1 meter. Assuming the bowling alley is on Earth, how much gravitational potential energy does it now have?

#### Question 7 7. What kind of relationship does gravity follow with distance?

#### 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. You lift a 3kg dumbbell from the ground until it is above your head, at a height of 1.5 meters. How much energy did you use in the process? (Assume that you're not a space alien, and your gym is on Earth.)

#### Question 10 10. An example of a reversible reaction is shown by which of the following?

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#### Question 11 11. The force applied to an object is given by the equation F = 2x. If the total displacement is 4 meters, how much work is done in the process?

#### Question 12 12. What is the definition of centripetal force?

#### Question 13 13. 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 14 14. Which of these describes the basic idea of how calculus is used to find the gravitational force due to an extended object?

#### Question 15 15. What does eccentricity measure?

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#### Question 16 16. The time it takes a planet to travel around the sun one time is known as the:

#### Question 17 17. For a satellite in orbit, what force provides the centripetal force that keeps it moving in a circle?

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

#### Question 19 19. Which of the following is an assumption of Newton's Universal Law of Gravitation that doesn't EVER apply to an extended object?

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

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#### Question 21 21. Which of the following is a full definition of uniform circular motion?

#### Question 22 22. 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 23 23. What is the difference between a scalar and a vector?

#### Question 24 24. 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. If it took the man 2 minutes to complete the walk, what was his speed?

#### Question 25 25. A car of mass 1500 kg, moves in a circle at 30 m/s. If the circle has a radius of 8 meters, what is the size of the frictional force that is moving the car in the circle?

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#### Question 26 26. What is the centripetal force equal to at the top of a vertical circle?

#### Question 27 27. An object will experience an acceleration if:

#### Question 28 28. If the distance between two objects is doubled, and the mass of one of the objects is doubled, what happens to the gravitational force?

#### Question 29 29. Kepler's Second Law states:

#### Question 30 30. What do the brackets indicate in an equilibrium equation?

#### 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!