If
you need to reach me for any reason, you may contact me at
lisa.robak@edison.k12.nj.us.
Extra
Help is available in the mornings at 7 AM. Extra help is
available after school if you give me notice in advance. Please
make sure you come prepared with questions so that the time can
be used efficiently.
If
you would like to see a summary of your grades,
you may email me with your request and a summary of your grades
will be emailed to you.
UPDATED 11/14/11
PROM HAS BEEN BOOKED!!!
If you didn't get a chance to check it out, click below:
If you want the best prom possible, FUNDRAISE! The more you fundraise, the less it will cost! It is up to YOU - and by YOU I mean the
ENTIRE Junior Class!!!
This is going to be a VERY busy year!!! We need to do A LOT of fundraising for Senior Prom!
**Meetings are ALWAYS open to EVERYONE!
See Ms. Robak or Ms. Gumina if you have any questions!!! GO JUNIORS!
Momentum can
be defined as "mass in motion." All objects have mass; so if
an object is moving, then it has momentum - it has its mass
in motion. The amount of momentum that an object has is
dependent upon two variables: how much
stuff is moving and how fast the
stuff is moving.
Momentum depends upon the variables
mass
and
velocity.
THIS WEEK (1/16- 1/20):
This week we will take a look at the concepts behind momentum. We will discuss the Impulse-Momentum Theorem, where we will understand that any impulse acting on a system changes the system's momentum. We will also take a look at what factors affect momentum and use them to calculate the amount of momentum in a system. We will then go over the Law of Conservation of Momentum where momentum is conserved in a closed, isolated system. Any momentum situation occurs in a closed, isolated system, meaning that no other outside objects can be introduced that will affect the momentum.
NEXT WEEK (1/23 - 1/27):
Next week we will continue with momentum. We will distinguish between elastic and inelastic collisions as well as solve problems utilizing these types of collisions. We will use the Law of Conservation of Momentum to explain Newton's Cradle and other physics demonstrations of momentum. Forces applied over time periods create impulses, and we will continue to relate impulse to momentum and use the Impulse-Momentum Theorem to solve problems as well as solving conservation problems.
☻PROJECT: LAB: PHYSICS IN ACTION 2: Project is due during you lab period the week of 1/16-1/20!
☻QUIZ: Momentum: Monday 1/23
☻TEST: Momentum: Friday 1/27
☻QUIZ: TAKE-HOME UNIVERSAL GRAVITATION: Hand- In Tuesday 1/24
