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Read the question and encircle the letter the best answer. 1. A change in an object's position is called a. Force b. motion c. pulling d. pushing 2. How do you know if an object has changed position? a. It is not visible anymore. b. It looks bigger. c. It is farther or closer from a reference point. d. It is on top of a reference point. 3. Forces have both a. magnitude and speed. b. direction and speed. c. magnitude and direction. 4. The distance traveled by an object per unit time is called a. velocity b. speed c. momentum d. acceleration 5. The property of an object that resists change in its motion is a. mass b. inertia c. velocity d. momentum 6. A force that resists motion created by objects rubbing together is a. gravity b. friction c. speed d. force 7. A force that pulls objects toward each other is a. force c. gravity b. frame of reference d. kinetic energy 8. An example of balanced forces is a. a person skating back and forth on an ice rink. b. a tire with treads gaining speed on an icy road. c. two soccer players running in opposite directions. d. a book resting on a desk. 9. A force that sets an object into motion is a. Balanced b. friction c. unbalanced d. inertia 10. Velocity is a measure of speed that takes into account the a. weight of an object c. force of the movement b. direction of mmovement d. acceleration of an object
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