Consider rider on a typical bicycle pedalling up a hill. specifically, the case when the cyclist is using their body weight alone to apply the pedalling force. draw a diagram of the situation that you can use to analyse the system and answer the following questions: a)-does the mass of the rider affect the acceleration of the bike (and rider) up the hill? b)-is there an optimum ratio from pedal crank radius to rear wheel (including the chain drive ratio) that will maximise the acceleration? c)-is there a maximum angle that the bike and rider could ride up? d)-how does the angle of the pedal affect the acceleration (if at all)? e)-what coefficient of the friction is needed between the tyre and the wheel to ensure no slipping? for this question ignore the following: frictional losses within the bike . air resistance

When temperature of a substance increases, of its particles increase resulting in more between particles. real world applications of thermal expansion absolute zero (-273 degrees c) is the lowest possible temperature on the kelvin scale. it is a measure of where a substance has no kinetic energy. heat is a process of the . energy flows spontaneously from a object to a until equilibrium is reached. heat is measured in heat is transferred throughis a method of heat transfer that occurs between particles of matter that are in direct contact with each other. are poor conductors that impede / reduce the rate of heat transfer. is a method of heat transfer that occurs in fluids (non-solids) by means of currents. real world application of convectiona method of heat transfer through electromagnetic waves. when energy moves from one object to another inside a closed system, no energy is or in the system in the transaction. systems will spontaneously move to a state of organized energy or high disorder over time called