turf is a dense layer of grass
2006-12-18 22:00:01 · 4 answers · asked by leen311 2 in Science & Mathematics ➔ Chemistry
Its not about the speed you're moving at, its about how quickly you stop. Hitting something like hard turf or cement and you stop basically instantly. If however you hit sand or rubber matting the force of impact is spread out over a longer time so you dont actually take any damage. The same principle is involved with an airbag in a car. You are still decelerating from whatever speed you were going to zero VERY quickly, but it spreads it out to maybe a seconds impact time rather than a small fraction of that.
2006-12-18 22:09:40 · answer #1 · answered by Eaving OLarkin 3 · 0⤊ 0⤋
it all has to do with momentum. After jiumping he falls at an high speed. the rubber or sand gradually slow him down so he does not get hurt when he falls. However, he falls instantly on ahard surface all his kinetic energy is absorbed by the ground and de may brake something in the process.
2006-12-19 07:25:14 · answer #2 · answered by Dr Knight M.D 5 · 0⤊ 0⤋
Maybe it's all about the grass stains
2006-12-19 06:03:31 · answer #3 · answered by surfer_grl_ca 4 · 0⤊ 1⤋
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2006-12-19 06:07:57 · answer #4 · answered by Anonymous · 0⤊ 2⤋