Study Guides - Cherokee County Schools

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Name Date Class 2 10 Gravity <strong>Study</strong> Guide Gravity Directions: Answer the following questions on the lines provided. Chapter 3 1. What is gravity? 2. What are two things that the amount of gravitational force between two objects depends on? 3. Why does Earth exert a stronger gravitational force than the Moon? 4. If an object weighs 40 N on Earth, would it weigh more than 40 N on the Moon? Explain. Directions: Use the diagrams below to complete the following questions. Dry road Icy road 5. What is the centripetal force that allows a car to move around a sharp curve in a roadway? 6. Draw an arrow on the bottom diagram to show the movement of the car if the centripetal force of the road and car is not enough to overcome the car’s inertia when it reaches point B. 7. Explain how you know the car is accelerating when it reaches point A in the first diagram. A B Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.
Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc. Name Date Class 3 <strong>Study</strong> Guide The Third Law of Motion Directions: Use the illustrations to answer the following questions. Chapter 3 1. Draw an arrow on Figure A to show the direction the cannon will move when the cannonball is fired. 2. Draw arrows on Figure B to show the direction the oars must move to propel the boat forward. 3. Does the arrow you drew on Figure A represent an action force or a reaction force? 4. Do the arrows you drew on Figure B represent an action force or a reaction force? 5. If the force that propels the cannonball forward is 500 N, how much force will move the cannon backward? Explain. Directions: Solve the following problems. 6. What is the momentum of a 2-kg toy truck that moves at 10 m/s? 7. What is the momentum of a 2000-kg truck that moves at 10 m/s? 8. Which truck has more momentum? Why? The Third Law of Motion 11
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Study Guides - Cherokee County Schools

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