![]() ![]() What you expect to happen with your full reasoning - links to theory. ![]() Bounce efficiency is then calculated by the following formula:īounce efficiency = bounce height / drop height x 100% The effect of changing the drop height on the bounce efficiency is found by measuring the resulting bounce height using a meter ruler and sighting the rebound as close to right angles to the ruler as possible to minimise parallax errors. This is the dependent variable because it will change in response to the changes made in the bounce height due to the different amounts of gravitational potential energy involved.Ī little information on any calculations you will use - particularly if they are uncommon like the one used below. The effect of changing the drop height will be measured by calculating the bounce efficiency of the tennis ball. ![]() The variable to be changed in the experiment is the drop height, therefore the drop height will be the independent variable investigated. Discussing the variables involved in this experiment. ![]()
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