Tuesday, November 18, 2008 - Blocks 1 and 3

Stamped and then went over RA 4.5, particularly the kicking football problem.
Handed back RA 4.4
Handed back homework problems 3,8,9 14,24

Students had difficulty with problem 8. Gave them some time in class to work on it and then went over it. It is important to follow the problem solving strategy, draw the free-body diagram, from the free-body diagram write Newton's second law, and then do the math.

Showed that it is not possible to apply a force of 200 N to a piece of paper held in front of you. We estimated the mass, time, distance and calculated the acceleration and force - much less than 1 N.

Applications of Newton's Laws Worksheet. Worked problem 3 after giving students a chance to think about it. Students did a similar problem but with different masses for the blocks.

Assigned 42, 43, 44, 45, 48 on back side for tomorrow.

Last day to hand in CD 6 is Thursday.