Forces, Energy and Power
Knowledge you need to have:
Knowledge of the effects of friction on a moving object (no reference to static and dynamic friction).
Skills you need to develop:
Explanation, in terms of forces, of an object moving with terminal velocity.
Interpretation of velocity-time graphs for a falling object when air resistance is taken into account.
Use of Newton’s first and second laws to explain the motion of an object.
Resolution of a vector into two perpendicular components.
Resolution of the weight of an object on a slope into component forces parallel and normal to the surface of the slope.
Use of vector addition and appropriate relationships to solve problems involving balanced and unbalanced forces, mass, acceleration, and gravitational field strength.
Use of free body diagrams and appropriate relationships to solve problems involving friction and tension.
Use of the principle of conservation of energy and appropriate relationships to solve problems involving work done, potential energy, kinetic energy, and power.
