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Overview of Gravity 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!

Page 1

Question 1 1. As the mass of an object increases, the force of gravity acting on it will _____.

Question 2 2. Three people weighing 65 kg, 70 kg, and 85 kg jump from 1 meter off the ground at the same time. If there was no air resistance, who would hit the ground first?

Question 3 3. Mass is the _____ in an object , while weight is the _____ on that object.

Question 4 4. What is the weight in kg of a person who weighs 676.2 N?

Question 5 5. When an object falls under the action of gravity alone, it is said to be on _____.

Page 2

Question 6 6. The following graph describes an object in _____.

Question 7 7. Calculate the acceleration due to gravity on the surface of a planet with a mass of 14.23 x 1021 kg and an average radius of 2.1 x 105 m.

Question 8 8. Find the acceleration due to gravity on the surface of a planet with a mass of 3.5 * 10^24 kg and an average radius of 4.5 * 10^6 m.

Question 9 9.

The following formula is known as _____.

F = G(m1sub)2)/r2

Question 10 10. The acceleration due to gravity is _____ because it points down.

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Question 11 11. All of these statements are correct, EXCEPT:

Question 12 12. If we eliminate the effects of air resistance, objects dropped from the same height

Question 13 13. Gravity is

Question 14 14. Newtons' Second Law of Motion says what?

Question 15 15. Newton's Law of Universal Gravitation is F = G(m1m2/d^2). In this formula what do m1 and m2 represent?

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Question 16 16. A tennis ball is dropped from a roof 16 meters from the ground. How long does it take for the ball to reach the ground?

Question 17 17. A hotdog cannon shoots a hotdog straight up in the air with an initial velocity of 30 m/s. How high will the hotdog fly?

Question 18 18. The acceleration due to gravity is

Question 19 19. Given this Velocity vs. Time graph, which of these Position vs. Time graphs represents the same kind of motion?

Question 20 20. If you were to balance a person that weighed less than you on a teeter-totter, would you go a farther or closer distance to the teeter-totter's pivot point than the distance of the other person from the pivot point?

Page 5

Question 21 21. Using Newton's theory of universal gravitation, would you weigh more or less on Saturn, compared to your weight on Earth?

Question 22 22. Which of the following is accurate of acceleration due to gravity on Earth?

Question 23 23. Which of the following is accurate about the force of gravity?

Question 24 24. In which of the following situations would the center of mass and the center of gravity coincide?

Question 25 25. What is the center of mass for a system?

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Question 26 26. To correctly solve free fall problems, you need to

Question 27 27. Using the formula g = GM/R^2, calculate the acceleration due to gravity near the surface of Jupiter. The mass of Jupiter is 1.898 x 10^27 kg, and the average radius of Jupiter is 6.9911 x 10^7 m. The universal gravitational constant G is 6.67 x 10^-11 N-m^2/kg^2.

Question 28 28. You're standing on top of a building and throw a hammer straight down with an initial velocity of -11 m/s. It takes 4 seconds for the hammer to hit the ground. How high off the ground were you standing when you threw the hammer?

Question 29 29. Which of the following graphs represents free fall motion on a Velocity vs. Time graph?

Question 30 30. What is the force that keeps all of us pulled toward the earth's surface?

Overview of Gravity Chapter 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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