Energy, Work, and Power

Front

What is Mechanical Energy?

Back

Mechanical energy is the sum of kinetic and potential energy in a system.

Front

What is the formula for calculating Work?

Back

W = Fd, where W is work, F is force, and d is distance.

Front

How is Power defined in physics?

Back

Power is the rate at which work is done or energy is transferred, calculated as P = W/t.

Front

What is Kinetic Energy?

Back

Kinetic energy is the energy of an object due to its motion, calculated as KE = 1/2 mv².

Front

What is Potential Energy?

Back

Potential energy is the stored energy of an object due to its position or state, commonly gravitational potential energy, calculated as PE = mgh.

Front

What is the relationship between Work and Energy?

Back

Work done on an object results in a change in its energy.

Front

What is the unit of Power?

Back

The unit of power is the Watt (W), which is equivalent to one Joule per second.

Front

How do you calculate the Kinetic Energy of a moving object?

Back

Kinetic Energy (KE) is calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

What happens to Mechanical Energy in a closed system?

Back

In a closed system, the total mechanical energy remains constant, assuming no external forces do work.

Front

What is the significance of the Work-Energy Principle?

Back

The Work-Energy Principle states that the work done on an object is equal to the change in its kinetic energy.