Physics Paper 1 0.0 / 5 ? PhysicsEquations and FormulaeGCSEEdexcel Created by: scxrlettgraceCreated on: 21-05-19 20:35 What are vectors? a quantity that has magnitude and direction 1 of 38 Examples of vector quantities force,velocity,weight,displacement,weight,acceleration,momentum 2 of 38 What is a scalar? a quantity that only has magnitude 3 of 38 Examples of scalars speed,distance,mass,energy,temperature,time 4 of 38 What is the speed of sound in air? 340m/s 5 of 38 What is acceleration? how quickly you are speeding up 6 of 38 What is acceleration? the change in velocity in a certain time 7 of 38 What is meant by uniform acceleration? constant acceleration 8 of 38 Acceleration due to gravity is uniform for objects in... free fall 9 of 38 What is the acceleration of an object in free fall? 10m/s 10 of 38 For ditance time graohs what is the gradient? speed of a moving object 11 of 38 For a distance time graph what is the flat point? where it is not moving 12 of 38 For a distance time graph what does a curved line present? acceleration 13 of 38 For a velocity time graph what does the gradient mean? acceleration 14 of 38 For a velocity time graph what does a curve mean? changing acceleration 15 of 38 For a velocity time graph what does a flat point mean? constant speed 16 of 38 What is newton's first law? resultant force is needed to make something start moving speed up of slow down 17 of 38 What is acceleration inversely proportional to? the mass of the object 18 of 38 What is mass? the amount of stuff in an object 19 of 38 What is weight? the force acting on the object due to gravity 20 of 38 What is the centre of mass? the single point where force is acting on the object 21 of 38 What is the force acting towards of centre during circular motion? the centripetal force 22 of 38 What is inertia? the tendancy to keep moving with the same velocity 23 of 38 What is inertial mass? measure how difficult it is to change the velocity of an object 24 of 38 What is newton's third law? when two objects interact the forces they exert on each other are equal and popposite 25 of 38 If speed doubles then braking distance increases by 4 (2 squared) 26 of 38 If the speed triples then the breaking distance increases by 9 (3 squared) 27 of 38 What does kinetic energy equal? breaking force x braking distances 28 of 38 What is the conservation of energy? energy cannot be created or destroyed only transferred, stored or dissipated 29 of 38 How is energy transferred mechanically? pushing,stretching,squashing 30 of 38 How is energy transferred electrically? charge doing work against resistance 31 of 38 What does dissipated mean? energy is spread out and lost 32 of 38 How does lubrication work? reduces energy transferred by friction, work is done against friction 33 of 38 What is conduction? the way energy is transferred through vibrations 34 of 38 How is wind power produced? wind rotates blades turning the generator producing electricity 35 of 38 How is solar power produced? use energy to create an electrical current 36 of 38 How is hydro-electricity produced? flooding of a valley, water turns generator and produces electricity 37 of 38 How do tidal barrages work? tide fills up estuary water let out through turbine at a controlled speed, 38 of 38
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