1. A person performed 400 joules of work to move an object up a ramp that is 25 meters long. How much force was needed to move the object? A16 newtons B25 newtons C400 newtons D10,000 newtons BELL WORK 3/4/2015 Show your work. When you finish, STUDY WORD WALL!

2. Agenda 1. Bell Work 2. I have, who has 3. Review Word Wall 4. Word Wall Quiz 5. Work Calculations Practice 6. Exit Ticket

3. Objectives SPI 0707.11.1 Differentiate between the six simple machines. SPI 0707.11.2 Determine the amount of force needed to do work using different simple machines.

4. What’s due? - Thursday, 3/5: Quiz on Simple Machines and Work - Thursday, 3/5: Work Calculations Practice - Friday, 3/6: Benchmark Study Guide - Wednesday, 3/11: Benchmark Test - Friday, 3/13: Study Island 4E (Genetics) and 5A (Rocks & Minerals)

5. Word Wall Quiz Expectations - When you finish, place your quiz on the corner of Mrs. Bullard’s desk. - Pick up a Work Calculations practice page. - Work silently until all quizzes have been turned in. You may not use a calculator. Show all work. If you finish early, keep your paper at your desk and read.

6. Exit Ticket 1. If a person applies a constant force of 2 newtons on a book to pick it up off the floor and set it on a desk one meter high, how much work does that person do on the book? A0.5 joule B1 joule C2 joules D10 joules 2. A moving company did 50 J of work to move a couch 5 meters up a ramp. How much force was applied to the couch to push it up the ramp? A10 newtons B250 newtons C45 newtons D55 newtons Force = __Work____ Distance