Write a conclusion on understanding the increase and decrease in energy of an object
Answers
Answer:
because of mass increase and decrease in energy
An object can have both kinetic and potential energy at the same time. For example, an object which is falling, but has not yet reached the ground has kinetic energy because it is moving downwards, and potential energy because it is able to move downwards even further than it already has. The sum of an object's potential and kinetic energies is called the object's mechanical energy. As an object falls its potential energy decreases, while its kinetic energy increases. The decrease in potential energy is exactly equal to the increase in kinetic energy.
In all physical processes taking place in closed systems, the amount of change in kinetic energy is equal to the amount of change in potential energy. If the kinetic energy increases, the potential energy decreases, and vice-versa.
Explanation:
The energy transferred as a result of work being done can be either positive or negative. For example, in the mechanical sense, work can be done by an applied force to increase the velocity of an object. Work can also be done for example by friction to oppose the motion of the object and decrease its velocity.
In either case, the amount of work done in Joules is equal to the change in mechanical energy brought about.
The work done on an object might also result in an energy change outside the actual mechanical system. For example, the mechanical energy may be converted into an equivalent amount of heat energy, light energy, sound energy, energy of deformation, etc as a result of the equivalent amount of work being done on the object.