Such experiences teach us the potential that courage, perseverance and tolerance hold. It explains how one must react in the direst of the situations. It teaches us that one must never lose hope and try to find reasons to stay positive in the face of adversity. In such situations one must try his/her best to remain calm and composed and understand the power of unity and team work. Moreover, the importance of common sense, putting continuous efforts to overcome the catastrophe and the significance of being extra cautious and careful are learnt from such hazardous experiences.The experience teaches us that those who rough it out with life's gravest disasters become heroes.
A rain drop of radius 2 mm falls from a height of 500 m above the ground. It falls with decreasing acceleration (due to viscous resistance of the air) until at half its original height, it attains its maximum (terminal) speed, and moves with uniform speed thereafter. What is the work done by the gravitational force on the drop in the first and second half of its journey ? What is the work done by the resistive force in the entire journey if its speed on reaching the ground is 10 m s–1 ?