Thursday, September 23, 2010

ACCELERATION

The deffinition of Acceleration is- the rate of change and velocity with respect to magnitude or direction; the derivative of velocity with respect to time.

Sunday, September 19, 2010

School to Home

Coming home from school takes 20 minuts on the Toll Way... and we travel at a speed of 60 miles per hour.

                                               E                                             S                                            A    
X=60                                      V=X/T                                  V=60/20                                  V=30
T=20                                           
V=?




I could not upload a photo but I used Google Maps to support my answer...

Monday, September 6, 2010

Pendulum Lab

Hypothesis- If we shorten the string, then the pendulum will swing back and forth faster each time.

Methodolgy- Each time we shortened the string we swung the pendulum back and forth three times. We used a timer to calculate the time.

Data- LEANGTH (in)                           TIME (s)
  1.         68                                   2.53
  2.         64                                   2.52
  3.         54                                   2.43
  4.         49                                   2.29
  5.         43                                   2.13
  6.         37                                   1.93
  7.         25                                   1.55


GRAPH




Conclusion- Our final conclusion was that when the string is shortended the time decreases from when pendulum is realseased to when it is caught again. Our hypothesis was correct.