shows a car travelling at 30m/s on a level road. At this speed the car has to overcome a total force of 600N opposing the car (a) Calculate the distance travelled by the car in 10s.(b) State the value of the driving force produced by the engine for a steady speed of 30m/s (c) Explain why the car slows down when it climbs a hill, even though the driving force is unchanged (d) While on the level road and traveling at 30m/s, the driving force becomes zero. The mass of the car is 800kg. Calculate the deceleration of the car.

Identify two factors that determine the rate of stream erosion

Ahorizontal wire is tied to supports at each end and vibrates in its second-overtone standing wave. the tension in the wire is 5.00 n, and the node-to-node distance in the standing wave is 6.28 cm. (a) what is the length of the wire? (b) a point at an anti- node of the standing wave on the wire travels from its maximum upward displacement to its maximum downward displacement in 8.40 ms. what is the wire's mass?

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