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The height of Bounce of a Golf ball

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					The height of Bounce of a Golf ball




-Research Question:

How high will a golf ball bounce when dropped from different heights?



-Hypothesis:

The higher the distance from the ground the golf ball is dropped, the higher the
golf ball will bounce off the ground, because the gravity from the center of the
earth pulls it down towards the ground.



-Constant:

The golf ball’s weight and the amount of force we applied on the ball when we
dropped it on the ground.



-Independent:

The measurement we drop the golf ball from.



-Dependant:
The height the golf ball bounces off the ground.



-Apparatus (equipment needed for the particular experiment):

      1 golf ball
      1 wooden meter stick



-Diagram of the method:
              -Describe how you did the experiment:

              The golf ball was dropped from different heights when it was dropped, we
              measured the height(s) by putting the meter stick so it could be measured, (we
              definitely couldn’t guess what the height was). The golf ball was ball was never
              supposed to be pushed towards the ground, only dropped each time from the
              different heights.



              -Data Processing:

              The Height of the Bounce of a Golf ball

The height the golf   Trial 1:               Trail 2:               Trial 3:               Average
ball was dropped
from
50 cm                 44 cm                  41 cm                  39 cm                  41.3 cm
70 cm                 53 cm                  50 cm                  51 cm                  51.3 cm
90 cm                 63 cm                  68 cm                  66 cm                  65.6 cm



              -Data Presentation:



The height the golf   Trial 1:               Trail 2:               Trial 3:               Average
ball was dropped
from
50 cm                 44 cm                  41 cm                  39 cm                  41.3 cm
70 cm                 53 cm                  50 cm                  51 cm                  51.3 cm
90 cm                 63 cm                  68 cm                  66 cm                  65.6 cm


              -Line Graph:



              -Conclusion:

              My hypothesis was: The higher the distance from the ground the golf ball is
              dropped, the higher the golf ball will bounce off the ground, because the gravity
              from the center of the earth pulls it down towards the ground. The hypothesis
              was correct and the data can support it too, because when we dropped the golf
              ball 50cm above the ground the bounce was 41.3 cm high. And when we dropped
              it 90 cm above the ground the bounce was 6.56 cm. The number of the height of
the bounce increased when we dropped the golf ball from a higher point. Each
time the golf ball was dropped with no force applied, if the heights were
measured very accurately the golf ball bouncing from the same point they would
all be identical.

-Evaluation:

In our experiment we tried really hard and we did good, but I wouldn’t
necessarily say that we tried our very best, so of course the experiment could’ve
been improved in many scientific and non-scientific way.

      Weigh the golf ball(s)
      Use different types of golf balls
      Measure the height of every drop more accurately by recording it on
       video.
      Make sure that absolutely no force is applied when we drop the golf ball.

       Catching the golf ball as it bounced back off the ground was very difficult
       because it was moving so fast it was very hard to catch it the exact
       moment it stopped bouncing, and our hand can always shake or move a
       little that all made measuring the height of the bounce all the more
       difficult. But I think in that area my partner and I definitely tried our best.
       I hope everyone would improve in the next experiment.

				
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posted:8/7/2012
language:English
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