Question

a boat comes to rest if we stop growing it which force acts on it
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Answer 1

Answer:

frictional force

Explanation:

the boat comes to a stop due to frictional force caused by viscosity in the water(viscosity is basically the property of a liquid to stick together and to surfaces)

this viscosity provides resistance to the flow of a boat, causing it to stop.

Answer 2

Answer:

due to force and friction