Lessons › Unit 2
Mechanics
Motion, forces, momentum, energy, circular motion, rotation and gravity. 22 lessons.
2.1 Kinematics 1D
2.1.1Kinematics IntroDistinguish distance, displacement, speed and velocity.2.1.2AccelerationDefine acceleration and calculate it from a change in velocity.2.1.3Graphing MotionSketch and interpret displacement-time and velocity-time graphs.2.1.4Equations of MotionChoose the correct equation of constant acceleration for a problem.
2.2 Kinematics 2D
2.2.1Relative MotionUse reference frames to describe motion.2.2.2Projectile MotionExplain why horizontal and vertical motion are independent.
2.3 Forces
2.3.1Newton's LawsState Newton's three laws of motion.2.3.2Forces in EquilibriumExplain the condition for translational equilibrium.2.3.3Normal ForceExplain the origin and direction of the normal force.2.3.4FrictionDistinguish static and kinetic friction.2.3.5Forces and PulleysAnalyse systems connected by ropes and pulleys.
2.4 Momentum and Energy
2.4.1MomentumDefine momentum and impulse.2.4.2EnergyCalculate kinetic and gravitational potential energy.
2.5 Rotational Mechanics
2.5.1Circular MotionExplain why an object moving in a circle is accelerating.2.5.2Angular VelocityDefine angular displacement and angular velocity.2.5.3Circular ApplicationsAnalyse circular motion in real situations such as curves and rides.2.5.4Moment of InertiaDefine moment of inertia.2.5.5TorqueDefine torque and calculate it.