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28-12-2023
Physics

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A roller-coaster car is dragged up to point 1 (ℎ₁=45m from the ground level) where it is released from rest. Point 3 is (h₃=24m from the ground level). Point 2 is at the ground level (ℎ₂ =0m). Assuming no friction, calculate the speed at points 2 and 3.

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