Describe, qualitatively, motion in a circular path due to a force perpendicular to the motion as: (a) speed increases if force increases, with mass and radius constant (b) radius decreases if force increases, with mass and speed constant (c) an increased mass requires an increased force to keep speed and radius constant (F = mv²/r is not required)

Understand that mechanical or electrical work done is equal to the energy transferred

Define power as work done per unit time and also as energy transferred per unit time; recall and use the equations (a) P = W/t (b) P = ΔE/t