When will high school physics consider using the kinetic energy theorem, the conservation of mechanical energy, the conservation of energy, the conservation of momentum theorem, and the conservation of momentum theorem? And the left hand rule, how to use the right hand rule? And how to use Lenz's law?

When will high school physics consider using the kinetic energy theorem, the conservation of mechanical energy, the conservation of energy, the conservation of momentum theorem, and the conservation of momentum theorem? And the left hand rule, how to use the right hand rule? And how to use Lenz's law?

Kinetic energy theorem: Condition: Unlimited
Conservation of mechanical energy: work done only by gravity or elasticity
Conservation of energy: Unlimited
Conservation of momentum: only internal force without external force
Momentum theorem: Unlimited

Who knows the formula of momentum theorem?

3. Momentum theorem (1) content: the impulse of resultant force is equal to the change of momentum. Expression: ft = MV ′ - MV = P ′ - P, or ft = △ P. f in momentum theorem formula is the resultant force of all external forces including gravity. It can be constant force or variable force

What is conservation of energy and conservation of mechanical energy? What conditions should they meet? What is the formula?

Energy conservation means that the energy in the world can neither appear nor disappear out of thin air, but can only be transformed from one form to another, which can be established at any time. Mechanical energy conservation means that the sum of gravitational potential energy, elastic potential energy and kinetic energy is constant, and only when only gravity or elastic force does work, can it meet the formula w = EP