Posted by **Anonymous** on Monday, March 18, 2013 at 4:58am.

Betty weighs 449 N and she is sitting on

a playground swing seat that hangs 0.55 m above the ground. Tom pulls the swing back and releases it when the seat is 0.76 m above the ground.The acceleration of gravity is 9.8 m/s^2.

How fast is Betty moving when the swing

passes through its lowest position?

Answer in units of m/s

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