Question

A 43.5 kg girl is standing on a 164 kg plank. Both are 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 1.72 m/s x̂ relative to the plank.

(a) What is the velocity of the plank relative to the ice surface?

(b) What is the girl's velocity relative to the ice surface? Incorrect: Your answer is incorrect.

Answer 1