本题目来源于试卷: gc textbook chapter 7 Linear Momentum，类别为 通用国际物理
[问答题]
When you release an inflatd15)y uxn-2f2 inknjmed but untied balloon, wh8xhs:iu6f lu8 fix,zh 62,ih ay does it fly across the roomax2hu8s,huz6:,l f f i6h iix8?
参考答案:
When you release an inflated but untied balloon
at rest, the gas inside the balloon (at high pressure) rushes out the open end
of the balloon. That escaping gas and
the balloon form a closed system, and so the momentum of the system is
conserved. The balloon and remaining gas
acquires a momentum equal and opposite to the momentum of the escaping gas, and
so move in the opposite direction to the escaping gas.
本题详细解析:
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