10/28 qod

What part of 1st quarter do you feel like you need to review the most for next week's exams?

--ch

Dao 10/27

Today we continued working on Relative Motion.

First, we turned in HAC check sheet and the blue sheet (the blue paper that Mrs. Coat-Haan gave us at the beginning of the year). And then we check homework from page 84, number 47 – 57.

While we checking the homework, Mrs. Coat-Haan said “you guys seem relax before the test, and the exam on Tuesday”. It was a reminder because we were talking too much. Then she rode on her chair around the class to answer the questions on the homework and on the pair check.

She showed us how to do number 57, 56, 53, and 51. She showed us do number 56 and 57 using RθXY

Remember: RθXY is where you add two vector using the 2 equations x = Rcosθ and y = Rsinθ to get the x and y components, then add them up to get the resultant in vector notation form.

Then we finished up the pair check with 2 questions that was assigned on Thursday.  We turned the pair check in as soon as we finished it.

Homework is to finish both the test review and the quarter exam review, and study for the test on Friday.

Reminder: on the quarter exam review number 72, 73, and 80. Because they are really hard, Mrs.Coat-Haan will not take off point if you don’t have an answer. Under 1 condition, you have to have the sketch and the given data.

The Honor Review schedule: Thursday – Mrs.Grote in room 270, Friday – Mrs. Coat-Haan in room 266

I don’t know what is the content question for today was, so I don’t have an answer for that.

10/27 qod

In relative motion problems, we have to add vectors.  How do you know when to use ROXY?

--ch

10/26 qod

According to the compass on a plane, it is flying due north with an airspeed of 300 mph.  A wind is blowing due east at 85 mph.  Is the magnitude of the ground speed greater than, equal to, or the same as the air speed.  Explain your answer.
--ch

10/25 qod

What does it mean we talk about the number of g's?

--ch

10/24 Coleman

Today we presented our posters and stories explaining the death of Barbie Einstein. The time was 2.1 sec and the horizontal velocity was 7.3m/s. The stories shared similar themes of drug and alcohol deaths. Except Jacob's, which involved her getting shot out of a cannon. After we turned in our boards Mrs. Coats-Haan told us what really happened to Barbie. She then gave us two questions for homework. The first was about our assumptions and how we would explain them to a grand jury. The second was how high she would need to be the make the jump to the pool moving at 8m/s. Mrs. Coats-Haan also gave us 3 sheets at he beginning of class. They were The Case of the Scientific Aristocrat, HAC check, and The Non-Linear Motion Test Review.

QOD- 8m/s is 17.89mph. The fastest running speed recorded is 27.79mph. So, it's possible that someone could move that fast. That speed is definitely a running speed because walking would be much slower.

10/24 qod

Is 8 m/s an achievable speed for a person without mechanical aid?  If so, is it a running or walking speed.  Justify your answer.

--ch