The Non-Cooperation Movement, launched in 1920 by Mahatma Gandhi, marked a significant shift in India’s struggle for independence. It was the first mass-based political movement led by the Indian National Congress.
Although the movement was withdrawn in 1922 after the Chauri Chaura incident, it had already demonstrated the fragility of colonial authority and set the stage for future mass movements.

A ladder of fixed length \( h \) is to be placed along the wall such that it is free to move along the height of the wall.
Based upon the above information, answer the following questions:
(iii) (b) If the foot of the ladder, whose length is 5 m, is being pulled towards the wall such that the rate of decrease of distance \( y \) is \( 2 \, \text{m/s} \), then at what rate is the height on the wall \( x \) increasing when the foot of the ladder is 3 m away from the wall?