Physical Science: Potential Energy - Class - XI

The acceleration due to gravity on Earth is approximately 9.8 m/s^2. This is the standard value used in physics problems involving gravitational potential energy.

Total mechanical energy is the sum of kinetic energy and potential energy. Given 50J kinetic and 120J potential, the total is 50 + 120 = 170J.

Total mechanical energy is defined as the sum of an object's kinetic energy and its potential energy at any given time.

Mechanical potential energy depends on an object's position in a force field (gravitational or elastic). The wording in option C is closest, though it has a typo ('and' should be 'an'). Options A, B refer to specific types, and D is unrelated.

A battery stores energy in the form of chemical bonds, which is released as electrical energy when connected to a circuit. This is classified as chemical potential energy.

An object elevated above the ground has gravitational potential energy because of its position in a gravitational field. As it falls, this energy is converted into kinetic energy.

Elastic potential energy is stored in objects that are stretched or compressed, such as springs or rubber bands, and return to their original shape when released.

Potential energy is the energy stored in an object due to its position, condition, or chemical composition. Kinetic energy, by contrast, is the energy of motion.