A raindrop falling from a height $$h$$ above ground, attains a near terminal velocity when it has fallen through a height $$(3 / 4) h$$. Which of the diagrams shown in figure correctly shows the change in kinetic and potential energy of the drop during its fall up to the ground?

In a shotput event an athlete throws the shotput of mass 10 kg with an initial speed of $$1 \mathrm{~m} \mathrm{~s}^{-1}$$ at $$45^{\circ}$$ from a height 1.5 m above ground. Assuming air resistance to be negligible and acceleration due to gravity to be $$10 \mathrm{~m} \mathrm{~s}^{-2}$$, the kinetic energy of the shotput when it just reaches the ground will be

Which of the diagrams in figure correctly shows the change in kinetic energy of an iron sphere falling freely in a lake having sufficient depth to impart it a terminal velocity?

A cricket ball of mass 150 g moving with a speed of $$126 \mathrm{~km} / \mathrm{h}$$ hits at the middle of the bat, held firmly at its position by the batsman. The ball moves straight back to the bowler after hitting the bat. Assuming that collision between ball and bat is completely elastic and the two remain in contact for 0.001 s , the force that the batsman had to apply to hold the bat firmly at its place would be

A man of mass $$m$$, standing at the bottom of the staircase, of height $$L$$ climbs it and stands at its top.