A 44.6-kg girl is standing on a 155-kg plenk. Both originally at rest on a frozen lake that constitutes a frictionless, flat surface. The girl begins to walk along the plank at a constant velocity of 1.40 m/s relative to the plank. (a) What is the velocity of the plank relative to the ice surface? Time (b) What is the girl's velocity relative to the ice surface? im/s
A 44.6-kg girl is standing on a 155-kg plenk. Both originally at rest on a frozen lake that constitutes a frictionless, flat surface. The girl begins to walk along the plank at a constant velocity of 1.40 m/s relative to the plank. (a) What is the velocity of the plank relative to the ice surface? Time (b) What is the girl's velocity relative to the ice surface? im/s
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Transcribed Image Text:A 44.6-kg girl is standing on a 155-kg plank. Both originally at rest on a frozen lake that constitutes a frictionless, flat surface. The girl begins to walk along the plank et a constant velocity of
1.43 m/s relative to the plank.
(a) What is the velocity of the planic relative to the ice surface?
(b) What is the girl's velocity relative to the ice surface?
im/s
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