Assignment 1 due Wednesday June 27th:  

You have already done Unit 13 Homework or plan to turn it in tomorrow.

1. Read Chapter 5 "Energy" in your Text if you haven't already done so.

2. Do problems 7 and 13 and 28 at the end of CH 5 in your text.

3. Read the text: Chapter 6: Momentum and Collisions.

4. Do "Homework for Unit 14: One Dimensional Collisions"

The test will cover up to this point.

 

Assignment 2 due Monday July 2nd:  

1. Do problems 12, 16 and 27 at the end of CH 6 in your text

2. Do question 14-1 on Unit 14 below.

3.We have already spent a lot of time in class on circular motion and Newton's Law of Gravitation, so if you haven't already done so,

    read the text: Chapter 7 Sections 7.4 and 7.5. We will read the rest of the chapter later.

4. Read Ch 8 up to Section 8.4 page 237. We have done this in the lab and I will go over this in tomorrows class with some example

    problems.

 

Unit 14 Homework Question

14-1 Self Propulsion: Applications of Newton’s Law and Momentum Conservation : For time immemorial people have been cooking up schemes for low energy propulsion. Of course, we believe that whatever is designed better be compatible with Newton's Laws and the Law of Conservation of Momentum (which is actually a consequence of Newton's Second and Third Laws). Several schemes are shown below. Which ones do you think will work? Answer questions detailed in (a) through (d) by referring to the diagrams that follow and do a sketch of each situation to accompany your answer.

(a) A lazy fisherman turns on a battery operated fan and blows air onto the sail of his boat. Will he go anywhere? If he moves, what will his direction be? Explain. (b)A clever child is dangling a large magnet out in front of her wagon. It attracts a smaller magnet that she has attached to the front of her cart. Will she go anywhere? If she moves what will her direction be? Explain. (c) An astronaut is floating in outer space and wants to move backwards. She tosses a ball out in front of her. Will she go anywhere? If she moves, what will her direction be? Explain. (d) A college student on roller blade skates has a carbon dioxide container strapped to her back. The carbon dioxide jets out behind her under pressure. Will she go anywhere? If she moves what will her direction be? Explain.

 

 

If you have any questions or comments please e-mail bellis@marshall.edu