Monday, December 14, 2009

Acceleration, Mass, and Force?! Ahh



This week we took what we learned in class last week and expanded on it. We learned that the direction of the unbalanced force is the same as the direction of acceleration, and that the bigger the mass the smaller the acceleration and vise versa. We made a few force diagrams for examples.

Monday, December 7, 2009

May The Force Be With You....

Hello!!!! This week in science we started to learn about force. Not the force as in Star Wars (though that would be cool...) but in physics, force is what changes a state of rest or motion in an object. Force causes objects to accelerate or change direction. Force is measured in Newtons. (N) We made force diagrams that show how different forces affect an object. In life it helps us understand why some things rise or fall. For example a with a ball sitting on a table, the earth is pulling the ball down but that table pushes it up so it doesn't move. Let's say the force of the earth is 10N, same as the table. The number sentence would be (10N)+(-10N)=0N because the object is not rising or falling. Thanks for listening! Come back next week for some more exciting science! May the force be with you...