Name ______________________________ Date ____ Mr. Carcich CP Physics Work/Power/Machines Review Be sure you understand completely the following concepts. You need to know: Work The definition and units for work. What is 1 Joule equivalent to? Work is done when a force causes an object to be displaced 1 J= How can you tell if work is being done? What are the two requirements for work? How must they be acting? (Parallel or perpendicular) Work is done only when the force is parallel to the dispalcement Object must be displaced for work to take place When will work be positive? When will work be negative? Positive: force and displacement in same direction Negative: force and displacement in different directions How can you increase the amount of work you do?