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Newton’s Laws of Motion Practice Test 1. Which of Newton's Three Laws does the following statement satisfy? The relationship between an object's mass (m), its acceleration (a), and the applied force F is F=ma. Acceleration and force are vectors. This law requires that the direction of the acceleration vector is in the same direction as the force vector. A. Newton’s First Law B. Newton’s Second Law C. Newton’s Third Law D. All of the above 2. Which of Newton's Three Laws does the following statement satisfy? For every action there is an equal and opposite reaction. A. Newton’s First Law B. Newton’s Second Law C. Newton’s Third Law D. All of the above 3. Which of Newton's Three Laws does the following statement satisfy? An object at rest tends to stay at rest and an object in motion tends to stay in motion in a straight line at a steady speed until an unbalanced force acts upon it. A. Newton’s First Law B. Newton’s Second Law C. Newton’s Third Law D. All of the above 4. Which of Newton's three laws does the following example illustrate? If you have a hockey puck sliding along a table, it will eventually come to a stop. A. Newton’s First Law B. Newton’s Second Law C. Newton’s Third Law D. All of the above 5. Which of Newton's Laws does this situation represent? Imagine a ball moving in a straight line directly toward when another ball collides with it. The moving ball exerts a force on the ball at rest. This causes the ball at rest to accelerate. However, the ball at rest also exerts the same magnitude of force (in the opposite direction) of the moving ball. This will cause the moving ball to decelerate or even move in another direction. A. Newton’s First Law B. Newton’s Second Law C. Newton’s Third Law D. All of the above 6. In the following example, what are the forces that are acting on the ball that is thrown in the air? Choose all that apply. While the ball is in the air, it will keep going the same velocity unless a force changes the velocity (speed and direction). A. air friction B. gravity C. resistance of the ground D. mass of the ball 7. Which law states the need to wear seatbelts? A. Newton’s First Law B. Newton’s Second Law C. Newton’s Third Law D. All of the above 8. ________________ was the scientist who gave us the Laws of Motion. A. Galileo B. Mrs. Major C. Albert Einstein D. Sir Isaac Newton 9. What is another name for the Newton's first law of motion? A. Law of Acceleration B. Law of Velocity C. Law of Inertia D. Law of Mass 10. Which of Newton's Three Law does the following example illustrate? The blood in your head rushes to your feet when riding on an elevator this is descending and abruptly stops. A. Newton’s First Law B. Newton’s Second Law C. Newton’s Third Law D. All of the above 11. If two people are pulling against each other with forces of 500 N and 600 N, there is a/an A. balanced force B. unbalanced force C. weak force D. universal force 12. The tendency of matter to remain in constant motion unless acted on by an outside, unbalanced force is called A. inertia B. acceleration C. momentum D. force 13. According to Newton’s Third Law, action and reaction are A. equal and in the same direction B. equal and in opposite directions C. unequal and in the same direction D. unequal and in opposite direction 14. If you push on a wall with a force of 10 Newtons, the force acting on you is A. 0 Newtons B. 10 Newtons C. 20 Newtons D. 30 Newtons 15. When a woman stands with two feet on a scale, the scale reads 300 N. When she lifts one foot, the scale reads A. 0 N B. 150 N C. 300 N D. 600 N 16. A person is pulling west with 35 N of force against a person pulling east with 15 N of force. What is the net force? A. 50 N west B. 50 N east C. 20 N east D. 20 N west 17. Two people are pulling a refrigerator into a garage. One person is pulling south with 30 N of force, while the other person is pulling south with 25 N of force. What is the net force? A. 5 N south B. 5 N north C. 55 N north D. 55 N south 18. Weight is best described as A. an object’s resistance to acceleration B. what causes an object to fall C. the downward force exerted on an object due to gravity D. a force solely dependent on the object’s mass ANSWERS 1. B 2. C 3. A 4. A 5. C 6. A, B 7. A 8. D 9. C 10. A 11. B 12. A 13. D 14. B 15. C 16. D 17. D 18. C