# The boat

A boat of length $2.5\text{ m}$ and weight $100\text{ kg}$ is standing still in the water. Tim weighs $70\text{ kg}$ and is inside the boat. If he walks from the stern to the prow of the boat, then by how much distance (in meters) will the boat move?


Details and Assumptions:

• Water resistance and tilt of the boat are negligible.