11/12 Physics update and homework due 11/29

Hi folks,

First off, NO CLASS next Monday due to the Thanksgiving break.  Enjoy that turkey and stuffing!!!

Today we did a bit of work on the concepts of vectors and how to add them together to find final velocities.  We also did a fairly mathematically complex lab were the students had to predict the speed  a Hot Wheels car needed to cover a certain distance and the height that car needed to be dropped from to reach that speed.  The lab required some very tricky work with the formulas we've been working with the past few weeks.

For homework this week, 
Read pages 28 - 32 in the Conceptual Physics text book.

Do the exercise on page 32.

Do plug and chug questions # 1 - 5 on page 41
Do think and explain questions 1 - 2 on page 41
Do Think and Solve questions 1 - 6 on page 42.

Answers below.

Extra Credit Possibility!!!!!!

For extra credit, use these videos to calculate the vertical velocity, horizontal velocity, resultant velocity and find the acceleration that the car had to have by the time it left the ramp. The car travels 332 ft.  Please show ALL #'s and calculations so that I can check your math.



Plug and Chug

1. 250 km/h 150 km/h
2. 175 km/h
3. 141.4 km/h
4. 70.71 
5. 5

Think and Explain
1. 9  1
2. You move faster, take a look at the vectors.  :)

Think and Solve
1.  a.  10
    b. 10 NW
2.  200
3. 5 m/s
4 1.25m
5. 30 m/s
6. 250m  Don't get fooled by the wording on this.  It's just a typical type of these problems.  Find out how long it's going to take to hit the ground and then find out how far it travels in that time.  








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