じゆうらっか
自由落下
1. free fall
2. Free fallFree fall is any motion of a body where its weight is the only force acting upon it. These conditions produce an inertial trajectory so long as gravity remains the only force. Since this definition does not specify velocity, it also applies to objects initially moving upward. Since free fall in the absence of forces other than gravity produces weightlessness or "zero-g," sometimes any condition of weightlessness due to inertial motion is referred to as free-fall.
Read “Free fall” on English Wikipedia
Read “自由落下” on Japanese Wikipedia
Read “Free fall” on DBpedia
Read “Free fall” on English Wikipedia
Read “自由落下” on Japanese Wikipedia
Read “Free fall” on DBpedia
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