公式

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自由落下運動とは？公式を解説するとともに問題演習を解く！【物理基礎】

みなさん、こんにちは。今回は物体の落下運動の1つである自由落下について学んでいきましょう。落下運動、というと難しく聞こえますが要はボールを投げたときにボールがどのような動きをするのかを考えていきます。落下運動には自由落下、鉛直投げ下ろ...

様々な力とその働き

方べきの定理とは？方ベきの定理の証明と公式の簡単な覚え方【数学IA】

みなさん、こんにちは。数学ⅠAのコーナーです。今回のテーマは【方べきの定理】です。たかしくん方べきの定理って覚えられないや。テストに出なければいいのに…。たかしくんの期待とは裏腹に、方べきの定理の問題は毎年のように大学入試で問われるの...

【数学1A】場合の数を解説！公式を使って入試問題を解いてみよう

みなさんこんにちは。今回は数学１Aの【場合の数】を解説したいと思います。場合の数とは簡単に言えば、ある条件下で求めたい事柄が何パターンあるか、ということです。つまり、１つずつ数えていけば答えにたどり着くことができるということです。そうで...

場合の数・確率

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