Kinetic and Potential Energy

Front

What is Kinetic Energy (KE)?

Back

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

Front

What is Potential Energy (PE)?

Back

Potential Energy is the energy stored in an object due to its position or configuration, commonly gravitational potential energy, calculated as PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

Front

How does potential energy change during free fall?

Back

During free fall, an object's potential energy decreases as it falls to a lower height.

Front

What happens to kinetic energy when an object speeds up?

Back

When an object speeds up, its kinetic energy increases.

Front

What is 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.

Front

What is the formula for calculating work done?

Back

Work done (W) is calculated as 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 work and energy?

Back

Work is a transfer of energy; when work is done on an object, energy is transferred to or from that object.

Front

What is negative work?

Back

Negative work occurs when the force applied to an object acts in the opposite direction to the object's motion, resulting in a decrease in kinetic energy.

Front

What happens to kinetic and potential energy when a ball is thrown upwards?

Back

As a ball is thrown upwards, its kinetic energy decreases while its potential energy increases until it reaches its highest point.

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.