Mechanics Kinematics 2.1.1 Define displacement, velocity, speed and acceleration. 2.1.2 Explain the difference between instantaneous and average values of speed, velocity and acceleration. 2.1.3 Outline the conditions under which the equations for uniformly accelerated motion may be applied. 2.1.4 Identify the acceleration[] of a body falling in a vacuum near the Earths surface with the acceleration[] g of free fall. 2.1.5 Solve problems involving the equations of uniformly accelerated motion. 2.1.6 Describe the effects of air resistance on falling objects. 2.1.7 Draw and analyse distance-time, displacement-time, velocity-time and acceleration-time graphs. 2.1.8 Calculate and interprete the gradients of displacement-time and velocity-time graphs and the areas under velocity-time and acceleration-time graphs. 2.1.9 Determine relative velocity in one and in two dimensions. Forces and dynamics. 2.2.1 Calculate the weight of a body using the expression W = mg. 2.2.2 Identify the forces acting on an object and draw free-body diagrams representing the forces acting. 2.2.3 Determine the resultant force[] in different situations. 2.2.4 State Newtons first law of motion. 2.2.5 Describe examples of Newtons first law of motion. 2.2.6 State the condition for translational equilibrium. 2.2.7 Solve problems involving translational equilibrium. 2.2.8 State Newtons second law of motion. 2.2.9 Solve problems involving Newtons second law. 2.2.10 Define linear momentum and impulse. 2.2.11 Determine the impulse[] due to a time-varying force by interpreting a force-time graph. 2.2.12 State the law of conservation of linear momentum. 2.2.13 Solve problems involving momentum[] and impulse. 2.2.14 State Newtons third law of motion. 2.2.15 Discuss examples of Newtons third law of motion. Work, energy and power[]. 2.3.1 Outline what is meant by work. 2.3.2 Determine the work done[] by a non-constant force by interpreting a force-displacement graph. 2.3.3 Solve problems involving the work done[] by a force. 2.3.4 Outline what is meant by kinetic energy[]. 2.3.5 Outline what is meant by change in gravitational potential energy[]. 2.3.6 State the principle of conservation of energy. 2.3.7 List different forms of energy and describe examples of the transformation of energy from one form to another. 2.3.8 Distinguish between elastic and inelastic collisions. 2.3.9 Define power[]. 2.3.10 Define and apply the concept of efficiency[]. 2.3.11 Solve problems involving momentum, work, energy and power[]. Uniform circular motion. 2.4.1 Draw a vector diagram to illustrate that the acceleration[] of a particle moving with constant speed in a circle is directed towards the centre of the circle. 2.4.2 Apply the expression for centripetal acceleration. 2.4.3 Identify the force producing circular motion[] in various situations. 2.4.4 Solve problems involving circular motion.