# 11 Oct. Science 7 Pulling a cart with a constant force

A. Mindful moment.

B. Review previous DSN entries.

For example, have you completed the task outlined on 5 October. This will be a powerschool formative assessment!!!

http://rfrazier.msblogs.aes.ac.in/2018/10/05/5-october-science-7-changing-speeds-and-more/

***All students: Reply to today’s blogpost. Describe how you think the pullback car works. What  do you think makes the car change its speed from 0 m/s to the other speeds you observe during a trip? What is the mechanism do you think? Make a sketch of your imagined mechanism and add link to blog–with sharing so that anyone with the link can view. Be sure the response that you submit on the blog is also copied into your DSN entry for the day.

Reply to another student’s comment. Ask a clarifying question about their sketch and the mechanism they have proposed.

C. Preview today’s plan in the blogpost.

D. Create DSN entry for today in the motion folder.

E. Questions.

• * * * *

A. What will the motion of a cart look like when a constant force is applied in a horizontal direction? Make a sketch graph. Explain your thoughts in words. Be sure this is recorded in your DSN entry from our last class.

B. Large group discussion. In your notes today, record the expectations that your classmates have. Compare those expectations to your own. Be able to express an expectation and reason that are different from your own.

C. Let’s try to find out. We’ll need to arrange a measurement in a similar manner to what we have done before.

D. Let’s graph the motion.

Period 3 results:

Period 4 results:

E. Inertia.

F. Force.

G. If time:

http://rfrazier.msblogs.aes.ac.in/files/2012/09/wowLife-in-the-streampt1a.pdf

http://rfrazier.msblogs.aes.ac.in/files/2012/09/wowLife-in-the-streampart2.pdf