問答題

Consider the 2-D elastic collision between two identical balls, with one being a target initially at rest. How much is the angle between their final velocity vectors? Angle = ___________°

答案： 在二維空間中，考慮兩個相同的彈性球的碰撞，其中一個球作為目標(biāo)靜止不動。由于兩個球是相同的，它們具有相同的質(zhì)量和大小，因此...
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