Work done is the product of the force and the displacement through which the body moves.
w=f×s
it is scaler quantity
si unit is joule
energy of a body is its capacity for doing work.
it is also scaler quantity
si unt is joule
ok

Work and Energy

Introduction:
- Work and energy are two fundamental concepts in physics.
- They are closely related to each other and have significant applications in various fields.

Work:
- In physics, work is defined as the transfer of energy that occurs when a force is applied to an object and it is displaced in the direction of the force.
- Mathematically, work is calculated as the product of the force applied and the displacement of the object in the direction of the force.
- Work is a scalar quantity, which means it has magnitude but no specific direction.
- The unit of work is joule (J).

Energy:
- Energy is the capacity to do work or transfer heat.
- It exists in various forms such as kinetic energy, potential energy, thermal energy, etc.
- Kinetic energy is the energy possessed by an object due to its motion, while potential energy is the energy possessed by an object due to its position or condition.
- The total energy of a system is conserved, which means it remains constant unless acted upon by external forces.
- The unit of energy is also joule (J).

Work-Energy Theorem:
- The work-energy theorem states that the work done on an object is equal to the change in its kinetic energy.
- Mathematically, it can be expressed as: Work = Change in Kinetic Energy.
- This theorem helps in understanding the relationship between work and energy.
- It implies that if work is done on an object, its kinetic energy will change, and vice versa.

Applications:
- The concepts of work and energy are applied in various fields such as mechanics, engineering, and even in everyday life.
- They are used to analyze the motion of objects, calculate the efficiency of machines, understand the behavior of moving systems, etc.
- For example, in the field of transportation, the work done by an engine is used to determine the energy required to move a vehicle.

Conclusion:
- Work and energy are fundamental concepts in physics that are closely related to each other.
- Work is the transfer of energy that occurs when a force is applied to an object and it is displaced.
- Energy is the capacity to do work or transfer heat and exists in various forms.
- The work-energy theorem states that the work done on an object is equal to the change in its kinetic energy.
- These concepts have significant applications in various fields and help in understanding the behavior of systems and machines.