May 20, 2011

At the beginning of the class on Friday, we went over the answers for the questions on pages 45-47 as well as those on pages 49 and 50.

Here are the answers to those questions:

Pages 45-47:
















Pages 49 and 50:

















As well, don't forget to finish the yellow worksheet: Moving Charges Worksheet.
The next scribe is Arveen.

Impulse and Momentum

At the beginning of the class, we went over the answers for the worksheets assigned yesterday.
Here are the answers for those worksheets:

Page 6
1. twice
2. twice
3. the same as
4. a) the same
b) the same
c) the same
d) bug
e) the bug of course!

Page 15















Later in the class, we took down notes on how to derive the impulse-momentum equation from both the 2nd law and a graph.










This equation can be used to solve problems such as finding time and the force exerted.











Unit for impulse is N x S
Change in p is measured in
kg x m/s







We also took down notes on the different types of collisions.

















*Remember, in an elastic collision, the objects do not stick together after the collision, but bounce off each other. In an inelastic collision, the objects stick together and move as one after the collision.

Remember to finish page 7, 8 and 16 in the booklet.

The next scribe is Sarika.