10/2 HS Physics update and homework du 10/9

Hi folks,

Today we took it up a notch and began working with the concept of acceleration.  We will get deeper into this next week.

Just a warning, there will be a quiz next week so be sure to spend time with the velocity and acceleration problems and the definitions we've been working on the past few weeks.

For homework this week please do the following 2 assignments.  

Do questions 1 - 8 on page 26.  I'll send answers in a following email.

Also use the enclosed data table to answer the following questions.

1.  If the ramp is 6 feet long, what is the average velocity of the low slope, the medium slope and the high slope?

2.  What is the acceleration of the low slope, the medium slope and the high slope?

3.  For the high slope, as the ball is traveling down the ramp, where does it reach the average velocity?

4.  What speed will the ball have at the bottom of the high slope?

5.  For the high slope, imagine that the ramp was longer and the ball continued to maintain a constant acceleration.  What would the ball's velocity be after 1 second, 2 seconds, 3 seconds, 4 seconds, 5 seconds, 10 seconds?  

6.  How long would the ramp have to be for the ball to continue traveling on it for 5 seconds.  How about 10 seconds?

7.  How long would the ramp have to be if you wanted the ball to roll off at exactly 23 ft/s.

8.  How precise would you say this data set is?