Email Info

If you need to reach me for any reason, you may contact me at lisa.robak@edison.k12.nj.us.
If for any reason you will be absent from class and know in advance, please notify me by email so that I can ensure you receive the work that you need in order to stay with the class.

Extra Help

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.

Grades

Please check your grades on a weekly basis -  if you have any missing grades or an ABS in place of a grade for an assignment, you must show me the assignment or make it up ASAP before it gets changed to a zero grade as per class policy.

Physics News

Momentum is a quantity that can be thought of as a description of "moving inertia." The faster an object is moving, the more momentum it has. The more mass the moving object has, the more momentum it carries. Momentum is a vector quantity. Momentum is also a way to express how much force is needed to get something moving or to stop the object in a time of one second. This force exerted over a time period is known as impulse.


THIS WEEK (1/17 - 1/20):

This week we will begin to take a look at objects that have momentum. An object can only have momentum if it is moving, so it is essentially "mass in motion." We will see how momentum relates to Newton's Second Law. The amount of momentum that an object has is dependent upon two variables: how much stuff is moving (mass) and how fast the stuff is moving (velocity). We will discuss how applying an impulse to an object changes its momentum, and what can reduce the amount of force needed to do so. We will then use the Impulse-Momentum Theorem to solve problems.

 

NEXT WEEK (1/23 - 1/27):

This week we will continue to study objects that have momentum. We will begin to look at the Law of Conservation of Momentum. We will discover that in order for momentum to be conserved in a collision, the system of objects must be closed and isolated - meaning that it cannot gain or lose mass, and there can be no external forces acting on that system of objects. We will see that forces exerted by the colliding objects on each other are equal in magnitude and opposite in direction. We will also use the law to solve problems.

 

Upcoming Tests/Quizzes/Labs

Be prepared and ready for your next Test, Quiz, or Lab that's due!

LAB: Centripetal Force Lab: Due week of 1/16 on your lab day! FULL REPORT!

 QUIZ: Momentum: FRIDAY 1/20

LAB: Momentum: Due week of 1/30 on your lab day!