The assessment is structured in two sections of approximately 50 marks each: pure mathematics and statistics. Each section has a gradient of difficulty throughout the section and consists of a mix of short and long questions. Some questions will be set on the pre-release data set. Statics deal with objects at rest and ones that are moving with constant velocity. In this case, the forces acting over the objects are at equilibrium. In the diagram above, the vector r has magnitude r and direction j to the x-axis. Using basic trigonometry, we can calculate that the component of r in the direction of the x-axis is rcos j. The component in the direction of the y-axis is rsin j. Therefore r = rcos j i + rsin j j.

Mass is one significant variable to be considered when exploring the effects of motion in objects, and mass is a central variable in Newton's second law. Edexcel’s GeoGebra resources include a small number for Mechanics at A level, and more for Further Maths. Mathematics Students must take all components and explore the content in detail to be awarded the OCR A Level in Mathematics A. Content overview A unit vector is a vector which has a magnitude of 1. There are three important unit vectors which are commonly used and these are the vectors in the direction of the x, y and z-axes. The unit vector in the direction of the x-axis is i, the unit vector in the direction of the y-axis is j and the unit vector in the direction of the z-axis is k.Cambridge International AS & A Level Mathematics: Cambridge Elevate Teacher's Resource contains detailed lesson notes for each section of all five coursebooks in this series as well as additional guidance on the Explore activities within the books, PowerPoint slides with links to further resources and answers to all coursebook and practice book exercises. The impulseof a force (also measured in N s) is equal to the change in momentum of a body which a force causes. This is also equal to the magnitude of the force multiplied by the length of time the force is applied. When you select Answers and full worked solutions for any book, see Edexcel Appliedfor example, as well as the pdf document of questions with full worked solutions for the ‘Target your revision’, ‘Exam-style’ and ‘Review’ questions, you will find test yourself multiple-choice questions for each section. The assessment is structured in two sections: approximately 50 marks of pure mathematics and approximately 25 marks of mechanics. Each section has a gradient of difficulty throughout the section and consists of a mix of short and long questions.

Letters used to represent vectors should always be underlined or in bold type. For example, the velocity of an object may be represented by v. Since this is a vector quantity, it is in bold type. Small case letters are usually used to represent vectors.Edexcel’s latest Scheme of Work document now includes many links for the use of technology as well as all the very useful notes for teachers. A link from the Mechanics notes led to these CG50 Mechanics resources. Casio CG50 Mechanics Resources In addition to the resources listed below, I recommend Integral(school login required) which provides topic notes, worksheets, activities and assessments. Also, the National STEM Centre eLibrary has a good range of mechanics resources, including the excellent Mechanics in Action investigations. Please send additional resource recommendations to [email protected].

Momentum is measured in N s. Note that momentum is a vector quantity, in other words the direction is important. If two vectors are added together, the resultantis found by placing the vectors to be added end to end. If the vectors are given in unit vector form, you simply add together the i, j and k values. Therefore, if no other forces act on the bodies (in the direction of collision), then the total momentum of the two bodies will be unchanged. Hence the total momentum before collision in a particular direction = total momentum after in a particular direction.

Mark Schemes

A vector quantity has both magnitude and direction. Acceleration, velocity, force and displacement are all examples of vector quantities. A scalar quantity has magnitude, so the direction is not important, (examples include speed, time and distance). A scalar can also have sign (such as work done and charge).