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Lab Report Sample

Acceleration Lab Report


Acceleration in its immediate context is the rate at which the velocity of any moving object changes with time. The acceleration of an object defines the net result of any and all inclusive forces that act on the object. This is clearly outlined in the second law of Newton. The acceleration has an SI unit which is meters per second squared (Graham, 247). The knowledge of acceleration is evident in finding the magnitude and direction of force of different objects. In this experiment of free fall, we run a series of tests to try to understand how to calculate the acceleration in practical terms. One important thing to note is that the gravitational force represents the acceleration of the earth.

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Materials and methods

As we carried out this experiment, the materials used were; the spark which was allowed to fall freely from designated heights above the ground, a tape measure was used to measure the distance of fall. These readings were recorded on the recording sheet on the distance column. Moreover a stop watch was used to record the time taken by the spark to reach the ground. This was also transferred on to the recording sheet in the ‘time taken’ column. This experiment occurred in three folds and hence there were three tabular forms filled with this information.


After recording the values, the respective instantaneous velocities of the corresponding spark number were calculated using the formula; velocity =2d/Ts where‘d’ is the distance recorded and Ts is the time for the corresponding distance of the spark. From the values of the instantaneous velocities and corresponding time taken, we plotted the graph of velocity against time. Then we calculated the slopes of the various equation lines formed and found its value which is the value of acceleration.

Results and findings

From the above analysis, the slope of each graphs 1,2and 3 derived from the data collected were, 7.2m/s2    , 12.4m/s2 , and  4.3m/s2 respectively. Since the slope of the last graph has extreme value, we would average the values for the first and second graph. This gives us 9.8m/s2. This value of acceleration almost equal to the standard value of the earth’s gravity which 10m/s2(Graham, 247). The difference arises due to resistance depicted by frictional force between the air and the spark.


Conclusion from the above experiment, it is imperative to reach a consensus that the acceleration due to gravity is always around 10m/s2. And this in effect is varied by the forces that act against the gravitational force.

Work cited

Earthquake-actuated Automatic Gas Shutoff Devices. Reston, VA: American Society of Civil Engineers, 2008. Internet resource

McNamee, Graham. Acceleration. New York: Ember, 2012. Print.


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