When there is an impact in a physical experiment, there is a contact duration. Are you asking about how to increase the contact duration of the physical truth?
A simulation of an impact will be done with a certian time increment. If the time increment is small, there will be many frames in the results showing a lot of detail during the contact duration. If the time increment is large, there will be few or no frames in the results during the contact duration.Are you asking about how to get more detail in the results for a given contact duration?
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