ONE - the connection between force and motion Explain the difference between velocity and acceleration. You must include suitable drawings and/or diagrams within your response. Explain Newton's Laws of Motion and discuss the implications, giving appropriate examples to support your commentary. SECTION TWO - conservation of energy and momentum Describe the different forms that energy can take. Explain the principle of conservation of energy and discuss its implications including the concept of efficiency, giving appropriate examples to support your commentary. Define momentum and explain the law of conservation of momentum using a number of appropriate examples. SECTION THREE - the concepts and vocabulary of wave motion Explain the terms commonly used to describe a wave. You must include suitable diagrams within your response. Explain the difference between a transverse and a longitudinal wave giving an example of each. You must also identify the wavelength and frequency of each example you have given. Explain how water waves and sound waves can be reflected, refracted and diffracted. SECTION FOUR - the straight line model of the behaviour of light Explain the laws of reflection and their use in a suitable instrument. You