Logger Pro Analysis

Logger Pro- Analysis of the Free Fall experiment

We had analysed our free fall experiment with the programm logger pro. Our objective with this is to explain how is the experiment proceded and also to examine one of the videos we had recorded during the task, and with this, showing how the movement of the ball changes and how it is affected by it acceleration and by the height by which the marble is thrown.


MARÍA CASTRO

Conclusion

As we can see in our logger pro analysis, there are two graphs. The first one shows the velocity of the movement of the ball. It shows that as time is increasing, the velocity is decreasing (because when it goes down and it has the effect of gravity, it is negative), so this means that it is getting faster as the time increases. As we can see, the measurements are not very specific with the tendency line, but this is because the first point is when we had thrown the ball, so as the ball is thrown by a person, it is normal that in the first point its not so precised. The last two points of the graph, represent the time when the ball has reached the jelly surface, so it stops. On the graph below, we can see the movement of the ball, the place where it moves. So as the time increases, the ball goes deeper and down to reach the jelly surface that it stops the movement. If we compare our results with my hypothesis, the final velocity had decreased, but I thought in the hypothesis that it was going to increase. However, the velocity has decreased number, but it accelerated the speed. The reason why the numbers are negative is because it is falling down. Also,  the time of the marble to fall had changed, because the time changed the final velocity, which is the one that made the hole to be more deeper. More further is the ball form the surface, the bigger the hole would be, because it will last more time, and in that time, the velocity would decrease, so in this our hypothesis was correct. However, in our experiment we did not use plasticine, but we used the jelly solution, which was easier to measure the depth of the hole of the marble using this substance

Evaluation

I think that in our experiment we could have improved more things, because some data are not very précised. These could be because we could have thrown the ball at a non- précised distance, because maybe we could have made a mistake.  Another common mistake that we could have done is not preparing precisely the jelly solution, which it could have been denser, or less dense than it was expected to be. There is also a possibility that we could have not put the edge of the ruler on the exact place where it had to be, maybe we had put it some milimeters up or down as we expected. To solve this, I think that more people should revise that everything it’s in it correct place, and to make sure the measurements are précised, we could have done the experiment more than once. However, as well as the people, trying it more times to make sure the measurements are correct is also a good solution. Also, I think that with more time and concentration, the experiment would have been better done.