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Moriastera

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Conservation of momentum. The ramp will move back with equal but opposite momentum from the block. In any case, even a fixed ramp, momentum is conserved but it becomes a much larger system, the earth ramp block system.
We know the power (6x10^4 Watts), and that power equals work over time. If you solve for the work, you get 1.2x10^5 Joules. Work is a form of energy, and if you set the initial kenetic energy (0 joules) plus the work done by the engine equal to the final

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