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 - VgyanHub

Question:

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

Options :

(a)mnu
(b) 2 mnu
(c) 4 mnu
(d) 1/2 mnu

Answer :

(b) 2 mnu

Answer Steps :

Step 1:

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