When engine was turned off,boat with mass m was moving with speed v_0.
The force of friction F=-[itex]\alpha[/itex][itex]\nu[/itex]-[itex]\beta[/itex]v^2.
How long it would take to drop speed of boat 3 times?
Find the distance which the boat will travel in this time?
The Attempt at a Solution
I think i should try to solve differental equation in form of
But I realy dont know what to do next,could someone,please help me with some steps or tips?