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Overview of Forces 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. All of the following are correct EXCEPT:

Question 2 2. A force of 150 N compresses a spring 30 m. What is the spring's spring constant?

Question 3 3. Which of these is true about static friction?

Question 4 4. The force that a book exerts on a table when it sits on it is called _____ force.

Question 5 5. A 17 kg table is pushed across the floor at a constant speed, with a force of 125 N. What's the coefficient of sliding friction?

Page 2

Question 6 6. All of the following are forces acting on an object that is at rest on an inclined plane with nothing else touching it, EXCEPT:

Question 7 7. The materials of the two surfaces determine the _____.

Question 8 8. What is elasticity?

Question 9 9. If there is a negative sign in front of the Hooke's Law equation, what does the force, F, represent?

Question 10 10. If we apply a 5 newton force to a spring, and it stretches 0.2 meters, what is the spring constant of the spring?

Page 3

Question 11 11. Which equation is used to determine the normal force in any situation?

Question 12 12. A 20 kg mass is on a flat surface. What is the normal force provided by the surface on the mass?

Question 13 13. The mass in the scenario is 10 kg. What is the normal force provided by the surface, which is angled at Θ = 60°?

Question 14 14. Which of the following is a fully described force?

Question 15 15. Which of the following is NOT a contact force?

Page 4

Question 16 16. What is another way to say 'the force due to gravity'?

Question 17 17. Newton's Second Law of Motion is:

Question 18 18. A person hits a golf ball at an initial velocity of 20 m/s at an angle 60° and it lands 100 meters away. What is the x acceleration of the golf ball?

Question 19 19. A force of 500 newtons accelerates an object of unknown mass at an acceleration of 15 m/s2. What is the mass of the object?

Question 20 20. Which of the following is NOT an example of static friction?

Page 5

Question 21 21. What is static friction?

Question 22 22. If the normal force between a car parked on a hill and the road is 50 Newtons, and the coefficient of friction between the two surfaces is 0.5, what is the force of friction holding the car on the hill?

Question 23 23. What is the force needed to keep an object moving that is on flat ground with a mass of 10 kg and a coefficient of sliding friction of 0.4? Use an acceleration of 10.0 m/s/s in your calculations.

Question 24 24. What is the mass of an object if the coefficient of sliding friction is 0.67, the force necessary to keep it sliding is 500 Newtons and it is on flat ground? Use g = 10 m/s/s in your calculations.

Question 25 25. What is sliding friction?

Page 6

Question 26 26. What does a larger spring constant mean?

Question 27 27. An object is on a platform. The platform and the object are dropped towards the ground. What is the normal force exerted by the platform on the object as they are falling?

Question 28 28. Which is NOT true about forces?

Question 29 29. A 15 kg boy is pulled horizontally on a sled through the snow, by a force of 75 N. The force of friction from the snow acts opposite to the direction of movement of the boy and is 15 N. What is the acceleration of the boy?

Question 30 30. Why does static friction exist?

Overview of Forces 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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