Work and Energy Review-Physics

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or configuration. It is often associated with the height of an object in a gravitational field.

Front

What is the relationship between work and force?

Back

Work is done when a force causes an object to move in the direction of the force. The formula for work is W = F × d × cos(θ), where W is work, F is force, d is displacement, and θ is the angle between the force and displacement.

Front

When is work done on an object?

Back

Work is done on an object when a force acts on it and causes it to move. If there is no movement, or if the force is perpendicular to the direction of movement, no work is done.

Front

What is kinetic energy?

Back

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

Front

What happens to kinetic energy when an object comes to a stop?

Back

When an object comes to a stop, its kinetic energy becomes zero because its velocity is zero.

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy an object possesses because of its position in a gravitational field, typically calculated as PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

How does height affect potential energy?

Back

The higher an object is positioned in a gravitational field, the greater its potential energy, as potential energy increases with 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 work-energy theorem?

Back

The work-energy theorem 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?

Back

The formula for calculating work is W = F × d × cos(θ), where W is work, F is the force applied, d is the distance moved, and θ is the angle between the force and the direction of motion.