FIELD: devices for education in physics. SUBSTANCE: device has two physical bodies which freely fall on hard surface. One body embraces another one. One body serves as guide for another one which is connected to former by friction. One body has fixer for positioning another body. Hard surface has impact detector, which is connected to measuring device. Ends of guiding body which contact impact surface have clippers for motion of driven body. They are designed as half-sphere extension pieces from elastic material. Embracing body or part of embracing body is transparent. EFFECT: increased functional capabilities. 2 cl, 3 dwg
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