calorimetry
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no ans should be 3000J see initial momentum is 20 * 20 - 10 * 10 = 300kgm/sec now conserving momentum 30 * V = 300 => both will move together with 10m/sec so energy lost = initial energy - final energy = 4500 - 1500 = 3000J |
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"Imagination is more important than knowledge." |
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