# Test Prep Plan - Take a practice test

Take this practice test to check your existing knowledge of the course material. We'll review your answers and create a Test Prep Plan for you based
on your results.

How Test Prep Plans work

1

Answer 50 questions

Test your existing knowledge.

2

View your test results

Based on your results, we'll create a customized Test Prep Plan just for you!

3

Study smarter

Study more effectively: skip concepts you already know and focus on what you still need to learn.

# 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!

### Page 1

#### Question 1 1. 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?

#### Question 2 2. What do the brackets indicate in an equilibrium equation?

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

#### Question 4 4. 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 5 5. What kind of relationship does gravity follow with distance?

### Page 2

#### Question 6 6. Acceleration is:

#### Question 7 7. 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?

#### Question 8 8. 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 9 9. What is the name of the force that keeps an object in circular motion?

#### Question 10 10. What is the eccentricity of a circular orbit?

### Page 3

#### Question 11 11. 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 12 12. 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 13 13. 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 14 14. Is motion in a vertical circle 'uniform circular motion'? Why?

#### Question 15 15. 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?

### Page 4

#### Question 16 16. 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 17 17. If a planet's average distance from the sun is 10 AU, what is its orbital period?

#### Question 18 18. 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 kg, and the current radius is 0.9 x 10^7 meters, what is the velocity of the orbit?

#### Question 19 19. What is work in physics?

#### Question 20 20. An object moving in uniform circular motion has a constant _____, but a changing _____.

### Page 5

#### Question 21 21. 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 22 22. What is Newton's Law of Gravitation?

#### Question 23 23. Which of the following orbital eccentricities is NOT an elliptical orbit?

#### Question 24 24. What is chemical equilibrium?

#### Question 25 25. What is the centripetal force equal to at the top of a vertical circle?

### Page 6

#### Question 26 26. An object will experience an acceleration if:

#### Question 27 27. What is uniform circular motion?

#### Question 28 28. The time it takes a planet to travel around the sun one time is known as the:

#### Question 29 29. Which of the following units would be correct for an acceleration?

#### Question 30 30. Which of the following is a full definition of uniform circular motion?

#### Circular Motion and Gravitation in Physics 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!

#### Explore our library of over 79,000 lessons

Browse by subject