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Investigate the bounce height of a squash ball.

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Introduction

Physics Investigation To investigate the bounce height of a squash ball AIM- To investigate how the height from which a squash ball is dropped will affect its bounce height. EQUIPMENT- * 100cm ruler * Squash ball * Bench surface * Clamp DIAGRAM- METHOD- First we will set up the apparatus as in the diagram; a ruler attached to a clamp, with the ruler touching the surface of the bench. Then we will get the squash ball and drop it from 11 different heights, 10cm, 20cm, 40cm, 60cm, 80cm, 100cm, 120cm, 140cm, 160cm, 180cm and 200cm onto the bench surface. Every time we will record the height at which the ball bounces. The ball will be dropped from each height 3 times to gain an average height and also to make sure that the readings are correct. ...read more.

Middle

13 16 13.6 80 10 13 18 10 100 30 20 20 23.3 120 25 25 30 26.6 140 20 20 25 27.6 160 20 30 35 28.3 180 40 45 30 38.3 200 30 30 35 31 Analysis From my results the graph shows that the higher the ball is dropped from the more bounce height there will be. From my results I made an average to do this I added all three results together and divided by three to give me an average. Generally the bounce height increased about 4cm at each drop. The science that explains my results as the ball has different energy changes during the process of the drop. The ball starts in the air with potential energy, this is because it is held high up in the air. ...read more.

Conclusion

I think this is because the readings of the bounce height were not accurate enough to calculate this. EVALUATION I think that my results are fairly good, as most of them seem to have a good relationship. However there are a couple of anomalous results, the first one being at the 80cm height drop the average turned out to 10cm whereas I would have expected it to be around 17cm. This anomalous result is probably because of not having an accurate enough reading. I do think my results are good enough to make a probable answer that the bounce height increases at the same rate as the drop height. The method for taking the measurements was okay but not very accurate, to solve this I would have had one person dropping the ball and two people taking the measurements. Or a video camera could have been placed and recorded the drops, so we could then put the tape onto slow motion and take more accurate results but this would be too complicated. ...read more.

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