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Homework 3/19/12 1. Explain why your weight would be less on the moon than on Earth even though your mass would not change. 2. Name the two components that make up orbital motion, and explain why objects stay in orbit. 3. The force between a planet and a spacecraft is 1 million newtons. If the spacecraft moves to half of its original distance from the center of the planet, what will the force be? 4. What is the law of conservation of momentum? Give an example. 5. Calculate the momentum of a 1 kg ball that is moving eastward at 12 m/s. 6. Calculate the momentum of the following. a. a 75 kg speed skater moving forward at 16 m/s b. a 135 kg ostrich running north at 16.2 m/s c. a 5.0 kg baby on a train moving eastward at 72 m/s d. a 48.5 kg passenger seated on a train that is stopped 7. Calculate the velocity of a 0.8 kg kitten with a forward momentum of 5 kg m/s Homework 3/19/12 1. Explain why your weight would be less on the moon than on Earth even though your mass would not change. 2. Name the two components that make up orbital motion, and explain why objects stay in orbit. 3. The force between a planet and a spacecraft is 1 million newtons. If the spacecraft moves to half of its original distance from the center of the planet, what will the force be? 4. What is the law of conservation of momentum? Give an example. 5. Calculate the momentum of a 1 kg ball that is moving eastward at 12 m/s. 6. Calculate the momentum of the following. a. a 75 kg speed skater moving forward at 16 m/s b. a 135 kg ostrich running north at 16.2 m/s c. a 5.0 kg baby on a train moving eastward at 72 m/s d. a 48.5 kg passenger seated on a train that is stopped 7. Calculate the velocity of a 0.8 kg kitten with a forward momentum of 5 kg m/s Homework 3/19/12 1. Explain why your weight would be less on the moon than on Earth even though your mass would not change. 2. Name the two components that make up orbital motion, and explain why objects stay in orbit. 3. The force between a planet and a spacecraft is 1 million newtons. If the spacecraft moves to half of its original distance from the center of the planet, what will the force be? 4. What is the law of conservation of momentum? Give an example. 5. Calculate the momentum of a 1 kg ball that is moving eastward at 12 m/s. 6. Calculate the momentum of the following. a. a 75 kg speed skater moving forward at 16 m/s b. a 135 kg ostrich running north at 16.2 m/s c. a 5.0 kg baby on a train moving eastward at 72 m/s d. a 48.5 kg passenger seated on a train that is stopped 7. Calculate the velocity of a 0.8 kg kitten with a forward momentum of 5 kg m/s Homework 3/19/12 1. Explain why your weight would be less on the moon than on Earth even though your mass would not change. 2. Name the two components that make up orbital motion, and explain why objects stay in orbit. 3. The force between a planet and a spacecraft is 1 million newtons. If the spacecraft moves to half of its original distance from the center of the planet, what will the force be? 4. What is the law of conservation of momentum? Give an example. 5. Calculate the momentum of a 1 kg ball that is moving eastward at 12 m/s. 6. Calculate the momentum of the following. a. a 75 kg speed skater moving forward at 16 m/s b. a 135 kg ostrich running north at 16.2 m/s c. a 5.0 kg baby on a train moving eastward at 72 m/s d. a 48.5 kg passenger seated on a train that is stopped 7. Calculate the velocity of a 0.8 kg kitten with a forward momentum of 5 kg m/s Homework 3/19/12 1. Explain why your weight would be less on the moon than on Earth even though your mass would not change. 2. Name the two components that make up orbital motion, and explain why objects stay in orbit. 3. The force between a planet and a spacecraft is 1 million newtons. If the spacecraft moves to half of its original distance from the center of the planet, what will the force be? 4. What is the law of conservation of momentum? Give an example. 5. Calculate the momentum of a 1 kg ball that is moving eastward at 12 m/s. 6. Calculate the momentum of the following. a. a 75 kg speed skater moving forward at 16 m/s b. a 135 kg ostrich running north at 16.2 m/s c. a 5.0 kg baby on a train moving eastward at 72 m/s d. a 48.5 kg passenger seated on a train that is stopped 7. Calculate the velocity of a 0.8 kg kitten with a forward momentum of 5 kg m/s
