Physics Notes G11
Physics Exam Study Notes
By: Faizan Dhalla | SPH3U
1: Forces and Motion * Kinematics: study of motion * Basic types of motion: * Uniform (constant speed in straight line) * Non-uniform * Scalar quantity: with magnitude & no direction * Distance, average speed * Vector quantity: with magnitude (arrow above it) & direction (in square brackets after unit) * Position, displacement, acceleration * Velocity: * Rate of change of position * Average velocity: displacement divided by time interval for that change * 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: * Area under line gives displacement, slope gives acceleration * Resultant displacement of 2 dimensions: * Vector sum of individual displacements * Use Pythagorean Theorem and SOH-CAH-TOA * Relative motion: velocity of a body relative to a particular frame of reference * Methods of writing direction: * GPS = [E25°S] or [25° S of E] * RCS = [290°RCS] (Rectangular Coordinate System, measure CCW with 0° at positive x-axis) * Bearing = [N 160°] (measure CW from North position)
2: Energy * Dynamics: causes of motion * Force: push or pull, vector quantity * 4 fundamental forces: gravitational, electromagnetic, strong nuclear, weak nuclear * Unit of force: Newton (N) ->1N = 1(kg x m)/s2 * Net force/resultant force: vector sum of all forces acting on an object * Mass: quantity of matter in an object (standard: kg) * Weight: force of gravity on an object (Fg), measured in Newton’s
Newton’s Laws of Motion: 1. If the net force acting on an object is zero, the object will maintain its state of rest or constant velocity. 2. If the external net force on an object is not zero, the object
By: Faizan Dhalla | SPH3U
1: Forces and Motion * Kinematics: study of motion * Basic types of motion: * Uniform (constant speed in straight line) * Non-uniform * Scalar quantity: with magnitude & no direction * Distance, average speed * Vector quantity: with magnitude (arrow above it) & direction (in square brackets after unit) * Position, displacement, acceleration * Velocity: * Rate of change of position * Average velocity: displacement divided by time interval for that change * 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: * Area under line gives displacement, slope gives acceleration * Resultant displacement of 2 dimensions: * Vector sum of individual displacements * Use Pythagorean Theorem and SOH-CAH-TOA * Relative motion: velocity of a body relative to a particular frame of reference * Methods of writing direction: * GPS = [E25°S] or [25° S of E] * RCS = [290°RCS] (Rectangular Coordinate System, measure CCW with 0° at positive x-axis) * Bearing = [N 160°] (measure CW from North position)
2: Energy * Dynamics: causes of motion * Force: push or pull, vector quantity * 4 fundamental forces: gravitational, electromagnetic, strong nuclear, weak nuclear * Unit of force: Newton (N) ->1N = 1(kg x m)/s2 * Net force/resultant force: vector sum of all forces acting on an object * Mass: quantity of matter in an object (standard: kg) * Weight: force of gravity on an object (Fg), measured in Newton’s
Newton’s Laws of Motion: 1. If the net force acting on an object is zero, the object will maintain its state of rest or constant velocity. 2. If the external net force on an object is not zero, the object