What you’ll learn4 learning objectivesChoose one objective for a focused lesson, or study the complete topic.4.2.1Complex loci• understand the concepts of distance and speed as scalar quantities, and of displacement, velocity and acceleration as vector quantities Restricted to motion in one dimension only. The term 'deceleration' may sometimes be used in the context of decreasing speed.Syllabus objective4.2.2Complex loci• sketch and interpret displacement-time graphs and velocity-time graphs, and in particular appreciate that - the area under a velocity-time graph represents displacement, - the gradient of a displacement-time graph represents velocity, - the gradient of a velocity-time graph represents accelerationSyllabus objective4.2.3Complex loci• use differentiation and integration with respect to time to solve simple problems concerning displacement, velocity and acceleration Calculus required is restricted to techniques from the content for Paper 1: Pure Mathematics 1.Syllabus objective4.2.4Straight lines• use appropriate formulae for motion with constant acceleration in a straight line. Questions may involve setting up more than one equation, using information about the motion of different particles.Syllabus objective