Law of Falling Bodies

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7. Watch the video “Cosmic Voyage” it is very instructive and helps you visualize the multiple length scales we will be working with in this class. Submit your answers to the video response document afterwards. You can watch the video here (it has three parts)
http://www.youtube.com/watch?v=cMRoDyc8W2k
http://www.youtube.com/watch?v=MCPBbjea1-g
http://www.youtube.com/watch?v=xkfyoF6Gbj0

8. Watch carefully all the video tutorials. They have conceptual information and examples of how to solve problems.

Name: ______________________________________________________________ Written report Instructions: Print the guiding questions and use them to write your answers as you read or watch the instructional media (reading, video, radio podcast, computer simulation, etc.). Type the number of the question and your answer (do not re-copy the original question) and send the completed report to Blackboard’s SafeAssign. For all questions, answer in your own words (paraphrase). Answers that are directly copied from any internet source, including the instructional media studied, will receive no credit. Cosmic voyage video 1. What scale do people normally use to determine what is small or large? 2. Who demonstrated a revolutionary invention in 1609? What was the invention? 3. After stepping back four powers of ten (4 steps or 10,000 m), what can you observe? 4. After stepping back thirteen powers of ten (13 steps or 10,000,000,000,000 m), what can you observe? 5. What is located at 15 billion light-years away from Earth? 6. What are some of the first applications of the microscope? 7. Where is almost all the mass of an atom concentrated? 8. Why was Fermilab in Chicago designed for? 9. Explain the scientific theory of the origin of the universe. 10. When was our galaxy, the Milky Way, formed? 11. At the beginning of Earth’s history, what produced the oxygen we currently breathe? 12. What are black holes?
Name: ______________________________________________________________ Law of Falling Bodies Instructions: Print the guiding questions and use them to write your answers as you read or watch the instructional media (reading, video, radio podcast, computer simulation, etc.). Type the number of the question and your answer (do not re-copy the original question) and send the completed report to Blackboard’s SafeAssign. For all questions, answer in your own words (paraphrase). Answers that are directly copied from any internet source, including the instructional media studied, will receive no credit. Law of Falling Bodies 1. State the “law of falling bodies.” 2. According to the professor, why is the law of falling bodies so difficult to understand? 3. To make sense of the law of falling bodies, what must be discarded from the analysis? 4. Describe what happens when the penny and the feather fall inside the tube, but still with air resistance. 4. Describe what happens when the penny and the feather fall inside the tube after the air is removed. 5. An astronaut drops a hammer and a falcon feather on the Moon’s surface. What object hits the ground first? Why? 6. Throughout history, what erroneous notion have people incorrectly believed? 7. According to common experience, what increases as an object falls? 8. What was Leonardo da Vinci’s theory of falling bodies? 9. Explain how Galileo improved on Leonardo da Vinci’s theory of falling bodies. 10. According to Galileo, what is proportional to the distance an object falls? 11. What remains constant as an object falls on Earth?

Tutor Answer

apradeep92
School: UT Austin

HiI have made some changes in law of falling body questions' solutions .I have attached both Cosmic Voyage and law of falling body questions' solutions below in pdf and doc format.Please let me know if you have any issues or need any help/explanation.

Cosmic voyage Problems:
1.
2.
3.

We measure things/distance in meters to measure what is small or large.
Galileo Galilei demonstrated revolutionary invention in 1609. The invention was telescope.
After stepping back four powers of ten, we can observe all the islands of Venice, the Adriatic Sea and
the mainland of northern Italy.
4. After stepping back 13 powers of ten, we can observe the entire solar system.
5. Our complete visible universe is within 15 billion light-years, so the outer boundary of our visible
universe is located at 15 billion light-years away from Earth.
6. The first application of the microscope was to study droplets from the waterways of Holland.
7. Almost all the mass of an atom is concentrated in its nucleus.
8. Fermilab in Chicago was designed to create conditions, which existed at the time of birth of our
universe, so that scientists can know more about the smallest building block of matter.
9. The scientists believe that everything we see today, was once compressed into a hot, very small
dense mass and then a massive blast allowed all the universe's known matter and energy to come
together. Because of that massive blast, quarks combined into protons and neutrons. After attracting
electrons, they made atom, from which all matter in this world are made and that’s how our universe
started.
10. Our galaxy, the Milky Way was formed after around 10 billion years of the origin of the universe.
11. At the beginning of Earth’s history, the oxygen was produced by supernovas i.e. by the explosion of
massive stars after they used up their fuel.
12. A black hole is a place in space, which is created because of supernova i.e. because of a very big star
dying or falling in up...

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Anonymous
Thanks, good work

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