a ball of mass 8kg falls from rest from a height of 100 m. neglecting air resistance, calculate. its total energy after failing a distance of 40 m

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Did you know that in physics, the total energy of an object is the sum of its potential energy and its kinetic energy? When a ball with a mass of 8kg falls from rest from a height of 100 meters, neglecting air resistance, its potential energy can be calculated using the formula PE = mgh, where m is the mass, g is the acceleration due to gravity (approximately 9.8 m/s²), and h is the height. So, the potential energy at the start is 8kg × 9.8 m/s² × 100m = 7840 joules. As the ball falls, potential energy is converted into kinetic energy. If it has fallen a distance of 40 meters, you can calculate the new potential energy using PE = mgh, where m is the mass, g is still 9.8 m/s², and h is now 60m (100m - 40m). Thus, the new potential energy is 8kg × 9.8 m/s² × 60m = 4704 joules. The total energy after falling a distance of 40 meters is the sum of the new potential energy and the kinetic energy.