Work and Power REVIEW

Power (P) is defined as the work done (W) per unit time (t), expressed as P = W/t.

The unit for power is watts (W).

Work (W) is defined as the force (F) applied to an object times the displacement (d) in the direction of the force, expressed as W = F * d.

The unit for work is joules (J).

The unit for displacement is meters (m).

To calculate work done, multiply the force applied by the distance moved in the direction of the force: W = F * d.

Work is a transfer of energy; when work is done on an object, energy is transferred to that object.

Gravitational potential energy (PE) is the energy an object possesses due to its height above the ground, calculated as PE = m * g * h, where m is mass, g is acceleration due to gravity, and h is height.

The formula for gravitational potential energy is PE = m * g * h.

The acceleration due to gravity (g) is approximately 9.81 m/s² on the surface of the Earth.