Work and Energy

Front

What is the definition of kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion.

Front

How is kinetic energy calculated?

Back

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

Front

What is the definition of potential energy?

Back

Potential energy is the energy stored in an object due to its position or configuration.

Front

How is potential energy calculated for an object at height?

Back

Potential energy (PE) is calculated using the formula PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

What is the principle of conservation of energy?

Back

The principle of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is the relationship between work and energy?

Back

Work is done when energy is transferred from one system to another, and it is equal to the change in energy of the system.

Front

What is mechanical energy?

Back

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

Front

What factors affect kinetic energy?

Back

Kinetic energy is affected by the mass of the object and the square of its velocity.

Front

What is the unit of energy in the International System of Units (SI)?

Back

The unit of energy in the SI system is the Joule (J).

Front

What is the formula for calculating work done?

Back

Work done (W) is calculated using the formula W = Fd cos(θ), where F is the force applied, d is the distance moved, and θ is the angle between the force and the direction of motion.