A child sits on a swing that is 0.535 m above the ground when it hangs vertically. The length of the rope of the swing is 3.29 m. A mother pulls the child and swings back, and gives the child an initial push. At the moment when the parent's hands leave the child, the child is 1.24 m above the ground and has a speed of 1.61 m/s. Ignoring friction and air resistance, what is the child's speed

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A: Potential energy (v) = mgh m = mass g = gravitational constant h = height

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