# Physics Lab Accelerated Motion _ by fjhuangjun

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• pg 1
```									  d t       2

The total distance covered
is proportional to time
squared
Velocity-time

1. Graph “vf ” vs. time
2. Find the slope (aavg)

x  vo  v f  t
1
2
Acceleration-time

1. Graph “a” vs. time
2. Find the slope (aavg)

x  v0 t  at 
1      2

2
Conclusion for Acceleration Lab
The purpose of this lab experiment
was to investigate the relationship
between the distance and time for a
ball rolling down an incline. To do this
a ball bearing was rolled down an
incline as Galileo did in the late
1600’s. This simulates the effects
gravity had on an object just at a
slower rate in order to better study it.
The results showed that each successive
time interval the distance the ball bearing
traveled increased at a consistent rate.
This rate of acceleration was .30 m/s
every second according to the graphical
analysis. The distance increased by the
square of the time times this rate. For
example, the second unit of time the ball
bearing traveled 4 (square of 2) times
farther than the first, the 3rd unit of time 9
times more and so on.
Careful consideration to timing
should be taken as well as to
measurements to reduce the risk of
human error in this lab. In order to
further investigate this problem
several other factors could be tested.
The diameter and/or mass of the ball
and/or the angle of the incline are
such factors.

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