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{"ops":[{"insert":"A and B are the same two long boards resting on the smooth and horizontal ground, the length is L\u306b0.75m, the left end of A is in contact with the square end of B, and the masses of the two boards are both M\u00a0-2.\u00a0Okg.C is a small block with a mass = 1.0kg. Now give it an initial velocity of v2.Om\/s.\u00a0Make it start from the left end of the B board and slide to the right.\u00a0It is known that the dynamic friction factor between c, A and B is human white \"-0.20, and finally C and A remain relatively stationary. Take the acceleration of gravity g = 10m \/ s', and find the final velocity of the board A and B respectively\u00a0?\n"}]}
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