Physics
posted by Anonymous .
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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