... We then dropped it from 100 cm high and measured the bounce. We then repeated the experiment 9 times, each time dropping it 10cm lower. To keep the experiment fair the only variable, which we changed, was the height. We used the same ball through out the experiment and checked the ruler had not moved. My range of results was very wide in order to get an accurate set of results. Some of the results needed to be repeated to make sure that they were accurate. Results Height (cm) 100 90 80 70 60 50 40 30 20 10 Test 1 87 83 73 62 54 42 31 24 12 4 Test 2 86 83 71 63 51 42 31 22 12 3 Test 3 89 80 73 62 51 43 32 23 12 5 Average 87.3 82 72.3 62.3 52 42.3 31.3 23 12 4 Analysis From my results I can conclude that as the temperature of the ball raises the height of the bounce gets higher. This is in line with the kinetic theory, which defines that as the ball gets hotter the atoms get more energy and vibrate more. When the ball hits the surface then the atoms are pushed together and because they are ...

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