a body in motion

We all know about momentum, and not necessarily from physics. An idea can have momentum as readily as any object. In the world of physics, momentum is simply mass in motion.

We represent momentum with the lower case "p" and define it with the formula p=mv.

Click for some detail on momentum along with some interactive exercises.

A Safe Assignment, Newton's Laws Preview

Dropping A 300lb. Safe On A Buick

This weekend's homework:
(1) Based on how long the safe took to hit the Buick, how tall is the building?
(2) Provide (& explain) examples of inertia from this demonstration.
(3)What forces are acting on
(a) The safe?
(b) The Buick?

You may e-mail your answer to Mr. B directly or enter it as a comment on this blog (either way, you have to show your work. Blog responses will not be published until after the assignment due date.)

Here's a helpful kinematics video (The Physics of Martials Arts)sent in by Montessori's Ms. Guglielmini:


Up Next for the Class: Newton's Laws
Here's a brief Tutorial on Newton's Laws using Hypothetical examples (and the same Prentice Hall Conceptual Physics textbook we use):

note: projectile motion is not included