Thursday, September 17, 2009

Tursday 9-17-09 daily blog

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1 comment:

  1. AvelinaSeptember 17, 2009 at 9:20 AM

    Went over distance (how far) and speed (how fast) and new stuff on powerpoint. Vavg=(Vf+Vo)/2, Vavg=x/t (x is horizontal direction), Vavg=y/t (y is vertical direction.
    Triangle solution where you draw a triangle and fill it in.
    Acceleration equals the change in velocity divided by time.
    Delta v equals final v -initial v.

    Then we:
    1. Identify the concepts
    2. Identify the units
    3. Record the symbols
    4. Identify the equation/tool
    5. Plug and chug
    for A car is moving at 10m/s and seconds later it is moving 30m/s. What is its average accelertion in this 4 second time period.
    A:
    1. Time and acceleration
    2. 4s=t, 10m/s=Vo, 30m/s=Vf
    3. t, a, Vo, Vf
    4. a=(Vf-Vo)/t
    5. a=30m/s-10m/s/4s a=5m/s sq

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