Test Academy | n small balls each of mass m impinge elastically each second on a surface with velocity u. The force experienced by the surface will be mnu, 2 mnu, 4 mnu, mnu/2

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n small balls each of mass m impinge elastically each second on a surface with velocity u. The force experienced by the surface will be

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mnu
2 mnu
4 mnu
mnu/2

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