Obtain her velocity relative to the ice surface

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A 46.2 kg girl is standing on a 132 kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 1.22 m/s relative to the plank.

What is her velocity relative to the ice surface?

What is the velocity of the plank relative to the ice surface?

Reference no: EM13533962

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