A body of mass two kilograms falls freely from a height of ten meters under the influence of gravity taking acceleration due to gravity as ten meters per second squared. What is its kinetic energy just before striking the ground?

💡 Solution & Explanation

According to the principle of conservation of mechanical energy, the initial potential energy stored at height is completely converted into kinetic energy just before impact. Calculating potential energy as mass multiplied by gravity and height gives two multiplied by ten multiplied by ten, resulting in two hundred Joules. Kinetic energy formula half mv squared yields the exact same numerical value confirming energy conservation.