Work & Power Flashcard

Front

What is power in physics?

Back

Power is the rate at which work is done or energy is transferred, measured in watts (W).

Front

What is the formula for calculating work?

Back

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

Front

What is the unit of work?

Back

The unit of work is the joule (J).

Front

How is power calculated?

Back

Power (P) = Work (W) / Time (t).

Front

What is the relationship between work and energy?

Back

Work done on an object results in a change in energy of that object.

Front

If a force of 10N moves an object 5 meters, how much work is done?

Back

Work = 10N × 5m = 50 joules.

Front

What does it mean when no work is done on an object?

Back

No work is done if the object does not move, regardless of the force applied.

Front

What is the difference between work and power?

Back

Work is the total energy transferred, while power is the rate at which that energy is transferred.

Front

What is an example of a situation where work is done?

Back

Lifting a box off the ground is an example of work being done.

Front

What is force?

Back

Force is a push or pull on an object, measured in newtons (N).