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A child of mass 4 kg jumps from cart B to cart A and then immediately back to cart B . The mass of each cart is 20 kg and they are initially at rest . In both the cases the child jumps at 6 m\(s^{-1}\) relative to the cart . If the cart moves along the same line with negligible friction with the final velocities of \(V_{B}\) and \(V_{A}\),respectively. Find the ratio of 6\(V_{B}\) and 5\(V_{A}\) .

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