October 7

On Thursday, we went over the answers to the Chapter 9 Review worksheet.

Here are the answers:

1: 1600 N

2: 0.0013 s

3: 6700 N

4: 0.05 m/s [W]

5: -8.8 m/s

6: 81 m/s

7: 5.7 x 10^-2 m/s

8: 6 kg m/s

We then went on to finish the momentum unit by looking at momentum in two dimensions. These kind of problems involve finding the missing side of a triangle using a combination of the Law of Conservation of Momentum and trig ratios.

For homework, we got the Chapter 7: Momentum and Transparency 9-3 worksheets do.