問題詳情

2.(20) A 5-cm-diameter horizontal jet of water a velocity of 30 m/s relative to the ground strikes a flat plate that is moving in the same direction as the jet at the velocity 10 m/s. The water splatters in all directions in the plane of the plate. How much force does the water stream exert on the plate? 

參考答案

答案：A
難度：非常簡單0.939114
統計：A(509),B(6),C(5),D(0),E(0)

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