Front

What is Work in physics?

Back

Work is defined as the product of the force applied to an object and the distance over which that force is applied, in the direction of the force. It is calculated using the formula: Work (W) = Force (F) × Distance (d) × cos(θ), where θ is the angle between the force and the direction of motion.

Front

What is Power in physics?

Back

Power is the rate at which work is done or energy is transferred over time. It is calculated using the formula: Power (P) = Work (W) / Time (t). The unit of power is the Watt (W), where 1 Watt = 1 Joule/second.

Front

What is Energy?

Back

Energy is the capacity to do work. It exists in various forms, such as kinetic energy, potential energy, thermal energy, etc. Energy cannot be created or destroyed, only transformed from one form to another.

Front

What is Kinetic Energy?

Back

Kinetic energy is the energy possessed by an object due to its motion. It is calculated using the formula: KE = 1/2 mv², where m is the mass of the object and v is its velocity.

Front

What is Potential Energy?

Back

Potential energy is the energy stored in an object due to its position or configuration. For gravitational potential energy, it is calculated using the formula: PE = mgh, where m is mass, g is the acceleration due to gravity, and h is the height above a reference point.

Front

How is Work related to Energy?

Back

Work is a means of transferring energy from one system to another. When work is done on an object, energy is transferred to that object, increasing its energy.

Front

What is the relationship between Work, Power, and Time?

Back

Power is the rate at which work is done. Therefore, if more work is done in a shorter amount of time, the power output is greater. Conversely, if the same work is done over a longer time, the power output is lower.

Front

What is the formula for calculating Power?

Back

Power (P) = Work (W) / Time (t). This formula shows how much work is done in a given time period.

Front

What is the unit of Work?

Back

The unit of work is the Joule (J), which is defined as the amount of work done when a force of one newton displaces an object by one meter in the direction of the force.

Front

What is the unit of Power?

Back

The unit of power is the Watt (W), where 1 Watt is equal to 1 Joule per second.