Work / Energy

Front

What is work in physics?

Back

Work is done when a force is applied to an object and the object moves in the direction of the force.

Front

Is work done when carrying an object at a constant height?

Back

No, because the force (upward) is perpendicular to the direction of motion (horizontal).

Front

What is the formula for calculating work?

Back

Work = Force x Distance x cos(θ), where θ is the angle between the force and the direction of motion.

Front

What is kinetic energy?

Back

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

Front

What is potential energy?

Back

Potential energy is the stored energy of an object due to its position or state, such as gravitational potential energy.

Front

What happens to potential energy as an object falls?

Back

The potential energy decreases as it is converted into kinetic energy.

Front

What is elastic energy?

Back

Elastic energy is the potential energy stored in an object when it is compressed or stretched, such as in a spring.

Front

Where is kinetic energy highest in a pendulum?

Back

At the bottom of the swing.

Front

What is the principle of conservation of energy?

Back

Energy cannot be created or destroyed, only transformed from one form to another.

Front

What is the unit of work?

Back

The unit of work is the Joule (J).