Work and Power

Front

What is the formula for calculating work?

Back

Work (W) = Force (F) × Distance (d) in the direction of the force.

Front

What are the units for work?

Back

The unit for work is Joules (J).

Front

How is power defined in physics?

Back

Power is the rate at which work is done or energy is transformed.

Front

What is the formula for calculating power?

Back

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

Front

If a force of 50 N moves an object 10 m, how much work is done?

Back

Work = 50 N × 10 m = 500 J.

Front

What happens to the work done if the distance is doubled while the force remains constant?

Back

The work done is also doubled.

Front

Can work be done if an object does not move?

Back

No, if there is no movement, no work is done.

Front

What is the relationship between work and energy?

Back

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

Front

If 100 J of work is done in 5 seconds, what is the power?

Back

Power = 100 J / 5 s = 20 W.

Front

What is the significance of the direction of force in work?

Back

Only the component of force in the direction of movement does work.