A 450 kg girl is standing on a 150 kg plank the


A 45.0 kg girl is standing on a 150 kg plank. The plank,originally at rest, is free to slide on a frozen lake, which is aflat, frictionless surface. The girl begins to walk along theplank at a constant velocity of 1.50 m/s to the right relative tothe plank.

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

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

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Physics: A 450 kg girl is standing on a 150 kg plank the
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