Monday, December 17, 2012

impulse-momentum

This week we are going over the concept of the impulse-momentum theorem and using it to make sure that we have a successful egg drop.  The impulse-momentum theorem is used for more than just dropping eggs though.
In class we discussed how the air bag in a car uses the impulse-momentum theorem so that the change in momentum happens over a longer period of time for the person in the car.  This lessens the force that is exerted on the person in the car, hopefully decreasing their injuries.
 What is another way the impulse-momentum theorem is used in a real world application?  Remember you must post an original comment and comment on someone else's post.  As always your post is due by Sunday at 10 pm.  Keep it clean and have fun:)

Tuesday, December 11, 2012

week 15 conservation of energy

This week we are finishing our paper roller coasters.  Is your paper roller coaster working and are you going to have it finished by friday?  What challenges have you encountered when making your roller coasters?  When the marble is moving through the roller coaster what type of energy transformations are happening?

This is the first year that we have done the paper roller coaster project so I would like to know what you thought of the project.  Are there any suggestions you have so that next year it can be even better?

Remember you must post an original comment as well as respond to someone else's comment.  As always keep it clean and have fun!

Monday, December 3, 2012

WEEK 14: Conservation of Energy

This week we are discussing how energy changes form but is always conserved.  This week I want you to discuss an energy transformation that occurs that you see happening in real life.  It can be something that happens at school, work home, practice, etc.  I want you to describe the types of energy that occur how they change form.
This week you are also starting your paper roller coaster project.  I also want you to discuss how your roller coaster is coming along and what you are having trouble with or what seems to be working well.  Remember you must post an original comment and comment on someone else's post.  Keep it clean and have fun.

Here is the website with the roller coaster instructions and pictures.
Roller coaster instructions and pictures