Solution of task 13.2.5 from the collection of Kepe OE

Solution of task 13.2.5 from the collection of Kepe OE

13.2.5
A motor boat with a mass m = 200 kg after the motor is stopped moves rectilinearly,
Overcoming the resistance of water. The resistance force is R = 4v2.
Determine the acceleration of the boat when its speed v = 5 m / s.
(Answer -0.5)
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