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# hmwk2 - not the net force on the swimmer The net force is...

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Week 2 Homework Due April 14. 1. Why is the optimal launch angle in shot put slightly less than 45 ? Ac- cording to the textbook, which factor is more important than launch an- gle in determining the range of the shot put? Which figure supports this assertion? 2. What is a sport (besides basketball) where accuracy is the most important factor in selecting the optimal launch angle? 3. A hockey puck sliding across the ice finally comes to rest. Is this a con- tradiction of Newton’s first law? How would you explain it (in physics language)? 4. Use the ideas of inertia and Newton’s 1st and 2nd laws to explain why offensive lineman in football are huge but running backs are not. 5. What is the net force on the blocking sled in Fig. 5-6c? What direction does it point? 6. Consider the diagram of speed and water drag force during the breast- stroke cycle that is shown on the next page. (Hint: the lower graph is

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Unformatted text preview: not the net force on the swimmer. The net force is the forward propulsive force minus the illustrated drag force.) (a) At what point in the cycle is the acceleration largest? (Describe in terms of what the swimmer is doing.) (b) What is the swimmer doing when the acceleration is large and neg-ative? (c) Name two different parts of the cycle when the water resistance force is larger than the forward propulsive force. (d) Estimate quantitatively the maximum acceleration. Hint: Read Δ v and Δ t from the top graph. . Week 3 Warmup Questions Submit answers by midnight Sunday April 13. 1. Warmup question for April 15. In karate, how do you break a board without getting hurt? 2. Warmup question for April 17. In rock climbing, why is it easier to climb a vertical “chimney” (a narrow opening with two walls) than a single rock face that is less steep? 1 2...
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The text passage contains a series of homework questions and warmup questions for a course, with no answers provided for the questions.
multiple_questions
Given a text passage, determine:
    1. If it contains a mathematical question (including word problems or calculations)
    2. If an answer to that mathematical question is provided in the text

First, describe the content structure you found in 1-2 sentences.

Then provide your analysis in the following format:
TYPE: <one of the following values>
- NO_QUESTION
- SINGLE_QUESTION
- SINGLE_QUESTION_WITH_ANSWER
- MULTIPLE_QUESTIONS
- MULTIPLE_QUESTIONS_WITH_ANSWERS
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# hmwk2 - not the net force on the swimmer The net force is...

This preview shows pages 1–2. Sign up to view the full content.

Week 2 Homework Due April 14. 1. Why is the optimal launch angle in shot put slightly less than 45 ? Ac- cording to the textbook, which factor is more important than launch an- gle in determining the range of the shot put? Which figure supports this assertion? 2. What is a sport (besides basketball) where accuracy is the most important factor in selecting the optimal launch angle? 3. A hockey puck sliding across the ice finally comes to rest. Is this a con- tradiction of Newton’s first law? How would you explain it (in physics language)? 4. Use the ideas of inertia and Newton’s 1st and 2nd laws to explain why offensive lineman in football are huge but running backs are not. 5. What is the net force on the blocking sled in Fig. 5-6c? What direction does it point? 6. Consider the diagram of speed and water drag force during the breast- stroke cycle that is shown on the next page. (Hint: the lower graph is

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Unformatted text preview: not the net force on the swimmer. The net force is the forward propulsive force minus the illustrated drag force.) (a) At what point in the cycle is the acceleration largest? (Describe in terms of what the swimmer is doing.) (b) What is the swimmer doing when the acceleration is large and neg-ative? (c) Name two different parts of the cycle when the water resistance force is larger than the forward propulsive force. (d) Estimate quantitatively the maximum acceleration. Hint: Read Δ v and Δ t from the top graph. . Week 3 Warmup Questions Submit answers by midnight Sunday April 13. 1. Warmup question for April 15. In karate, how do you break a board without getting hurt? 2. Warmup question for April 17. In rock climbing, why is it easier to climb a vertical “chimney” (a narrow opening with two walls) than a single rock face that is less steep? 1 2...
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### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern
user
The text passage contains a series of homework questions and warmup questions for a course, with no answers provided for the questions.

TYPE: MULTIPLE_QUESTIONS