If a surface is elastically hit by N balls each of mass M, moving with – McqOptions

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1.	If a surface is elastically hit by N balls each of mass M, moving with same velocity V, the force on the surface will be
A.	2 MNV2
B.	MNV
C.	Pulsejet
D.	2 MNV
E.	4 MNV
Answer» E. 4 MNV

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