The Work-Energy Theorem is a fundamental principle in physics that relates the work done on an object to its change in kinetic energy. It states that the net work done on an object is equal to the change in its kinetic energy.
The Work-Energy Theorem can be applied in various real-life situations, such as calculating the energy required to lift an object, determining the speed of a moving vehicle, or predicting the distance a ball will travel when kicked. It is also used in engineering and mechanics to design and optimize machines and structures.
Yes, the Work-Energy Theorem is always true as long as there are no external forces acting on the object. This is because work and kinetic energy are both conserved quantities in a closed system.
No, the Work-Energy Theorem only applies to conservative forces, which are forces that do not dissipate energy and follow the principle of conservation of energy. Non-conservative forces, such as friction or air resistance, do not follow this principle and cannot be accounted for using the Work-Energy Theorem.
The units of work and energy in the Work-Energy Theorem are Joules (J) or Newton-meters (Nm). This is because both work and energy are measured in units of force multiplied by distance, and the standard unit of force is the Newton (N).