Period+7+Physics

=Physics=

Work-Energy Review Problems __Directions__: Solve the following problems and then post your answers as a reponse to my post. After you've done that, you can check your answer with the rest of the class, ask questions or comment on others' work.

media type="custom" key="5387519"

Check that you've got the correct answers: 1. W = 50 J 2. F = -4,000 N 3. h initial = 5.1 m 4. h final = 5.83 m

Conservation of Energy Problems __Directions__: Solve these 3 problems and then post your answers as a reponse to my post.

media type="custom" key="5375081" Check that you've got the correct answers: 1. final speed = 20.7 m/s 2. final speed = 14 m/s 3. height above water = 5.9 m

Homework Problem (due Friday 1/29) __Directions__: Solve the problem and then post your answer to the discussion page as a reply to my original post.

__Problem__: Mr. Aul needs to carry a book from the ground to the top of a 1-meter-high hill. He has two paths that he can follow as shown below: A.) Which path will require the most work? Justify your answer. B.) Which path will Mr. Aul find easier to follow? Justify your answer.