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Michigan Merit Exam: Forces 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. Which of the following is accurate about the force of gravity?

Question 2 2. Which of the following explanations is contrary to Newton's first law of motion?

Question 3 3. Consider a bullet shot from a gun. The acceleration of the bullet is _____.

Question 4 4. 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 5 5. Consider an object at rest. Which of the following is true concerning this object?

Page 2

Question 6 6. Which of the following formulas is used to calculate net force?

Question 7 7. Which of the following is a correct statement regarding centripetal force?

Question 8 8. Consider a 10 kg object free-falling from a cliff with an initial speed of 0 m/sec. What will the speed of the object be after 1 sec and after 2 sec?

Question 9 9. What does it mean that force is a vector quantity?

Question 10 10. When a cannon fires a cannonball there is an interaction between the two objects, so there are action and reaction forces. The cannon recoils only slightly as it shoots out the cannonball, but the cannonball goes flying through the air. Why is the acceleration greater on the cannonball?

Page 3

Question 11 11. Imagine you are carrying a pan filled with water around a track. Which of the following is the best explanation of what happens to the water as you take a left turn holding the water in front of you?

Question 12 12. Who was the first to conceptualize and explain acceleration?

Question 13 13. Which best describes acceleration?

Question 14 14. If a planet's orbit all of a sudden became more elongated, then:

Question 15 15. Which best describes free-fall?

Page 4

Question 16 16. What is Newton's third law of motion?

Question 17 17. Stored energy subject to gravitational attraction by another body is called:

Question 18 18. Newton's second law of motion can best be described as ...

Question 19 19. What does it mean to say that 'action always equals reaction'?

Question 20 20. What is meant by the equation ΣF = 0?

Page 5

Question 21 21. How can a moving object be in equilibrium?

Question 22 22. Why do we say that force is a vector quantity?

Question 23 23. A centrifuge has a radius of 6 meters. What tangential velocity must be achieved, at the end of the centrifuge arm, in order to provide a 2G force (twice the force of gravity) on a 90 kg man?

Question 24 24. What does friction oppose?

Question 25 25. Consider a fish swimming forward in the ocean. Which of the following describes the basic action/reaction forces between the fish and the water?

Page 6

Question 26 26. What is the significance of the value 9.8 m/s^2?

Question 27 27. What is needed to change an object's state of motion?

Question 28 28. Which of the following are units for force?

Question 29 29. Consider an alien on a planet with an acceleration of gravity equal to 20 m/sec2. If the alien's mass is 10 kg, how much does the alien weigh?

Question 30 30. What is net force?

Michigan Merit Exam: Forces 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!

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