physics

a parent pushes a kid on a swing,
A) If the child on the swing rises 2m above the lowest point during each cycle, what is her speed at the lowest point of the swing?
B)If the beginning of a cycle (2m above the lowest point) the child is given a push so that her starting speed is 3 meters/second, what will be her speed at the bottom of the swing?
How do I approach the first question without the length of the rope or the weight of the child?

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asked by chris

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