An ant runs from an ant-hill in a straight line so that its velocity is inversely proportional to the distance from the centre of the ant-hill. When the ant is at point A at a distance 41 m from the centre of the ant-hill, its velocity v₁ = 2 cm/s What time will it take the ant to run from point A to point B which is at

a distance = 2 m from the centre of the ant-hill?