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MHT CET Physics question

PhysicsLaws of MotionMHT CET

‘n’ balls each of mass ‘m’ moving with the same velocity ‘u’ hit a wall elastically and normally in 2 second. The force exerted by the balls on the wall is [MHTCET 2023]

Answer: (C)

Solution

Total change in momentum in 2 s, so ; 2mun ignores

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Question ID VK-062491