Collected RA 2.3
Gave quiz on Newton's 2nd Law
Continued showing Hewitt video on Newton's 2nd Law
Went over why, in the absence of air resistance, objects fall at the same rate.
Thursday, December 3, 2009
Tuesday, December 1, 2009
Tuesday, Dec 1, 2009 - APS 3A
Ask about Newton's Laws over long Thanksgiving weekend. "How many people slept in...?"
Newton's First Law - objects at rest tend to stay at rest.
What force got you up this morning? Fnet = ma. Force that got you up was your "ma".
Went over content objectives:
1. State Newton's 2nd Law both in words and in equations
2. Draw a correct free-body diagram with labels, that shows all the forces acting on an object
3. Explain why, with no air resistance, objects with different weights fall at the same rate.
Showed video clip on falling objects, vacuum and on Moon.
Went over RA 2.2
Showed start of Hewitt video on Newton's 2nd Law
Got as far as derivation of Fnet = ma
Asked why objects with different weights fall at the same rate...did not resolve due to lack of time.
Newton's First Law - objects at rest tend to stay at rest.
What force got you up this morning? Fnet = ma. Force that got you up was your "ma".
Went over content objectives:
1. State Newton's 2nd Law both in words and in equations
2. Draw a correct free-body diagram with labels, that shows all the forces acting on an object
3. Explain why, with no air resistance, objects with different weights fall at the same rate.
Showed video clip on falling objects, vacuum and on Moon.
Went over RA 2.2
Showed start of Hewitt video on Newton's 2nd Law
Got as far as derivation of Fnet = ma
Asked why objects with different weights fall at the same rate...did not resolve due to lack of time.
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