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Homework Week 6 Physical Science Class Directions: Answer the following questions using your notes. 1. _____________ causes an object to move. 2. An example of friction is __________. 3. Newton's third law of motion states that __________. 4. What is the friction between a rolling object and the surface it rolls on called? 5. What is the equation for momentum? 6. What causes some objects to fall slower than others? 7. A(n) __________ is a push or a pull that one body exerts on another. 8. The __________ is the combination of all the forces acting on an object. 9. Forces that cancel each other are called __________ forces. 10. __________ measures an object's tendency to resist changing its motion. Calculations: Directions: Use the KWFL chart to answer the following word problems. 1. A net force of 2500 N acts on an African male elephant with a mass of 7000 kg. What is the acceleration of the African male elephant? 2. A physics book with a mass of 2.8 kg is pushed along a table with a net force of 1 N. What is the book's acceleration? 3. Calculate the momentum of a 16-kg bicycle traveling north at 3 m/s. 4. Calculate the momentum of a 12-kg bicycle traveling east at 2 m/s. 5. Calculate the acceleration of a bus whose speed changes from 7 m/s to 16 m/s over a period of 5 s. 6. What is the weight of a man on Earth with a mass of 110 kg? Homework Week 6 Physical Science Class Directions: Answer the following questions using your notes. 1. _____________ causes an object to move. 2. An example of friction is __________. 3. Newton's third law of motion states that __________. 4. What is the friction between a rolling object and the surface it rolls on called? 5. What is the equation for momentum? 6. What causes some objects to fall slower than others? 7. A(n) __________ is a push or a pull that one body exerts on another. 8. The __________ is the combination of all the forces acting on an object. 9. Forces that cancel each other are called __________ forces. 10. __________ measures an object's tendency to resist changing its motion. Calculations: Directions: Use the KWFL chart to answer the following word problems. 1. A net force of 2500 N acts on an African male elephant with a mass of 7000 kg. What is the acceleration of the African male elephant? 2. A physics book with a mass of 2.8 kg is pushed along a table with a net force of 1 N. What is the book's acceleration? 3. Calculate the momentum of a 16-kg bicycle traveling north at 3 m/s. 4. Calculate the momentum of a 12-kg bicycle traveling east at 2 m/s. 5. Calculate the acceleration of a bus whose speed changes from 7 m/s to 16 m/s over a period of 5 s. 6. What is the weight of a man on Earth with a mass of 110 kg?