AP Physics - Work and Power

Front

What is the relationship between work and energy?

Back

The work done by an external force acting on an object causes a change in the mechanical energy of the object.

Front

How is work calculated when a force is applied at an angle?

Back

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

Front

What is the formula for calculating power?

Back

Power = Work / Time.

Front

Define work in physics.

Back

Work is defined as the transfer of energy that occurs when an object is moved over a distance by an external force.

Front

What unit is work measured in?

Back

Work is measured in Joules (J).

Front

What is the significance of the angle in work calculations?

Back

The angle affects the effective component of the force that does work in the direction of motion.

Front

How do you calculate the work done when pushing an object?

Back

Work = Force × Distance, if the force is applied in the direction of motion.

Front

What is the work done if no displacement occurs?

Back

If there is no displacement, the work done is zero, regardless of the force applied.

Front

What is the relationship between work and kinetic energy?

Back

The work-energy theorem states that the work done on an object is equal to the change in its kinetic energy.

Front

How do you determine the work done on an object being lifted vertically?

Back

Work = Weight × Height, where Weight = mass × gravity.