কার্য, শক্তি ও ক্ষমতা
Work done by variable forces, work-energy theorem, conservative force fields, spring potential energy, and collisions.
Scalar definition of work W = F · s, graphical area under F-x curve, work done by variable spring and gravitational forces.
Kinetic energy formulation 1/2 m v^2, calculus derivation of work-energy theorem for constant and variable forces, W_net = ΔK.
High-yield summary comparing conservative and non-conservative forces, potential energy wells, and coefficient of restitution collision criteria.
Conservative vs non-conservative forces, potential energy definition F = -dU/dx, gravitational and spring potential energy, mechanical energy conservation.
Instantaneous power P = F · v, coefficient of restitution (e), 1D and 2D elastic collisions, and perfectly inelastic collisions.