The End of Work

C and F Blocks took their work and energy exams today and will start with momentum and impulse tomorrow. F Block will conduct a lab investigation centering on the impulse-momentum theorem. When we started the previous chapter, we said there were some other things one had to consider about an object's change in motion besides the size of the net force - distance through which the force was acting and the duration of the application of the force. We looked at the distance piece with work and add the time piece in this chapter. The impulse-momentum looks at force, time and momentum change, with impulse being defined as the product of net force and time. In Newton's day, force was looked at as the rate of change of momentum, another way of relating the variables. You'll investigate this tomorrow and C Block will discuss it in class.

B and E blocks reviewed Friday's work on power and also the concepts for the chapter in preparation for tomorrow's exam. As for C and F Blocks, we will move into momentum and impulse after our test and the lab that F Block will conduct on Wednesday will investigate the impulse-momentum theorem.