According to energy conservation law, Work done by the hand and due to gravity = total change in the kinetic energy Initially the the ball is at rest and finally at top its velocity become zero so total change in kinetic energy ∆K=0 Whand +Wgravity =∆K [Here distance covered would be 0.2 meter for force by hand as force is applied while ball is in contact with hand. And gravity will still work while ball is in contact with hand so total distance due to gravity would be 2+0.2=2.2 meter. ] ⇒F(0.2)−(0.2)(10)(2.2)=0⇒F=22N ∴ Option (D) is correct.