Sept. 16 – Vector Components and Formative Lab 2

Hi Everyone,  I was not able to come to class yesterday, so today I reviewed what would have been yesterday's homework.  Page 75 Question #13.  I had perfect attendance in both periods, so everyone should have the full solution to that question.  If you understand that question entirely, you are on a good track!  If not, I will stay after school tomorrow for as long as you need to help you get up to speed.

Please come find me in room 248 after school, Wednesday, for extra help.

For the rest of the period, we did another formative lab.  The second page on this handout:

• Kinematics Lab 1: Rolling a Ball

Here's the data from Period 2:

Rolling a ball down a hill
	Roll 1	Roll2
d (m)	time (s)	time (s)	average (s)
4.0	2.6	1.9	2.3
8.0	4.2	3.4	3.8
12.0	5.3	4.1	4.7
16.0	6.1	4.8	5.5
20.0	7.2	6.0	6.6

The graph from this data is here:

I suggest ignoring the last point when drawing your curve of best fit.

Here's the data from Period 5:

Ball Rolling down a hill
	Roll 1	Roll 2
d (m)	time (s)	time (s)	average (s)
3.0	1.9	1.2	1.6
6.0	3.4	2.1	2.8
9.0	3.4	3.2	3.3
12.0	4.6	3.6	4.1
15.0	5.7	4.4	5.1

The graph of this data is here:

I suggest removing the last two points when drawing your curve of best fit.

Notice the above graphs are not complete!  They have no titles and is not properly labelled.

Homework

• Please complete this graph in your own and continue with the questions on the handout.