Conservation of Energy

Front

What is the Law of Conservation of Energy?

Back

The Law of Conservation of Energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or configuration, often related to its height above the ground.

Front

What is kinetic energy?

Back

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

Front

How do you calculate the total mechanical energy of an object?

Back

Total mechanical energy (TME) is the sum of potential energy (PE) and kinetic energy (KE): TME = PE + KE.

Front

What happens to the kinetic energy of an object as it falls?

Back

As an object falls, its potential energy decreases while its kinetic energy increases, keeping the total mechanical energy constant (in the absence of air resistance).

Front

What is the role of friction in energy conservation?

Back

Friction converts mechanical energy into thermal energy, which can lead to energy loss in a system.

Front

What is normal force?

Back

Normal force (Fn) is the force exerted by a surface to support the weight of an object resting on it, acting perpendicular to the surface.

Front

How does mass affect gravitational potential energy?

Back

Gravitational potential energy (PE) increases with mass; it is calculated using the formula PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

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.

Front

What is the relationship between force, mass, and acceleration?

Back

According to Newton's second law, the relationship is given by F = ma, where F is force, m is mass, and a is acceleration.