IGCSE Physics section A:Forces and motion 2.0 / 5 based on 1 rating ? PhysicsForces and MotionIGCSEEdexcel Created by: chloe pollardCreated on: 25-03-13 12:33 What is the speed, distance and time formula d=vt, v=d/t, t=d/v 1 of 21 What is the acceleration formula a=(v-u)/t, =change in velocity/time taken 2 of 21 What are the different types of forces gravity, reaction, electrostatic, thrust, drag, upthrust, tension 3 of 21 What is terminal velocity it is when the resistance force and the acceleration force are equal meaning there will be no more acceleration 4 of 21 what is the first law of motion balanced forces mean no change in velocity 5 of 21 what is the second law of motion a resultant force (unbalanced force) means acceleration 6 of 21 What is the force formula F=ma, Force=mass x acceleration 7 of 21 What is the third law of motion (Reaction forces) if object A exerts a force on object B then object B will exert the same opposite force on object A 8 of 21 What do vector quantities have and name some they have size and direction, force, velocity, momentum, displacement, acceleration 9 of 21 what do scalar quantities have and name some they have only size, mass, temperature, time, length 10 of 21 What is stopping distance made up of thinking distance and braking distance 11 of 21 How can the total stopping distance be effected how fast your going, how dopey you are, mass of vehicle, how good the brakes are, how good the grip is. 12 of 21 what is the momentum formula p=mv, momentum=mass x velocity 13 of 21 what is the change in momentum formula F=(mv-mu)/t, Force= change in momentum/ time taken 14 of 21 What do crumple zones in cars do they increase the time reducing the force on impact 15 of 21 what do seat belts do they increase the time reducing the force on the chest which then reduces the injury to the chest 16 of 21 what is the moment formula moment=force x perpendicular distance to the pivot 17 of 21 what is the formula for the seasaw balance total anticlockwise moments = total clockwise moments 18 of 21 What will happen if the anticlockwise and clockwise moments do not equal there will be a resultant force 19 of 21 What does hooke's law say extention ∝ force 20 of 21 what is the orbital speed formula v=2πr/t, =2π*orbital radius/time period 21 of 21
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