NEW Physics Exam General Notes 2022 Best document for revision

NEW Physics Exam General Notes 2022 Best document for revision Physics Exam General Notes 1: Forces and Motion ● Kinematics: study of motion ● Basic types of motion: o Uniform (constant speed in straight line) o Non-uniform ● Scalar quantity: with magnitude & no direction o Distance, average speed ● Vector quantity: with magnitude (arrow above it) & direction (in square brackets after unit) o Position, displacement, acceleration ● Velocity: o Rate of change of position o Average velocity: displacement divided by time interval for that change o 2-D motion: using GPS (global position system) ▪ N/S/E/W to communicate directions ▪ Ex: 5.0 cm [25° S of E] or [E25°S] ● Acceleration: rate of change of velocity ● V-t graph to find other things: o Area under line gives displacement, slope gives acceleration ● Resultant displacement of 2 dimensions: o Vector sum of individual displacements o Use Pythagorean Theorem and SOH-CAH-TOA ● Relative motion: velocity of a body relative to a particular frame of reference ● Methods of writing direction: o GPS = [E25°S] or [25° S of E] o Bearing = [N 160°] (measure CW from North position)